![Can I get a lower price? | Discounts depended on the design and offer dates [OK Prostate Chip]](/img/a/T0285/eyecatch.svg)
This page is based on entries from "ok-lab's diary" (https://ok-lab.hatenablog.com/), the Japanese development diary written by Mr. Okada, founder of OK Lab, a small company in Japan (Okada Comfortable Life Laboratory). Only the entries about "price cuts, discounts, and promotions" are summarized here, in order of publication. Past prices and sizes are as written at the time. Current prices come from the official product list (retrieved September 4, 2026). Quotations are translated from Japanese.
Note: This page is a personal reading log by someone with no connection to the maker or the seller. It reflects the source entries as of their publication dates and makes no guarantee of accuracy or safety. The product is not a medical device; talk to a doctor about any health decision. Check the official site for current information. This page contains advertising.
In short
- Price cuts covered selected parts, revised designs, and temporary offers.
- Mr. Okada sometimes reduced charges when production became simpler or an order needed fewer parts.
- Related products remain listed, but the latest proposed price reduction has no confirmed final price in the material.
About this product
The OK Prostate Chip is a small device that is placed in the urethra (the urine passage) so that it acts on the prostate; the maker sells it in several shapes, sizes and materials.
It is made and sold by OK Lab (Okada Comfortable Life Laboratory), a small company in Japan, through its own online store, and prices are in Japanese yen (JPY). The maker's development diary, "ok-lab's diary", is written in Japanese. This page is an English summary of it, and every quotation is translated. OK Lab ships internationally, so readers outside Japan can order (see "Buying from outside Japan" below). Product names on this page are plain-English descriptions. The official Japanese product name is shown once in the product table so you can find the same item in the store.
Before you read: key terms
| Term | Plain-English meaning |
|---|---|
| Urethra | The urine passage, where the maker places the chip to act on the prostate. |
| 3-hole accessory | A small part with three holes, offered as a stopper or support alongside the main chip. |
| Controller | A separate unit that controls a vibrating chip’s operating patterns. |
| Electrode | An electrical contact on a chip, used to deliver electrical stimulation. |
| Cable holder | An external fitting intended to keep cable tubing in position. |
| Tube cover | A covering over connecting wire; Mr. Okada recommends it for the three-part design discussed below. |
| Loop-ended wire extension | A shaped wire ending in a loop, proposed for a design without nylon thread. |
| Two-thread safety chip | A part used in a two-thread assembly; the December 2021 entry discusses its limits in a proposed loop design. |
What happens: OK Prostate Chip discounts
The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. The discounts discussed here concern its parts, custom work, and temporary sales offers. Accessories attach to the chip or its thread, while controllers (units controlling vibration patterns) work with vibrating models. The diary links lower prices to simpler production, omitted components, or specific promotional conditions.
Three-hole accessories brought lower prices for some parts in June 2018
In an entry published in June 2018, Mr. Okada announced 3-hole accessories (small stopper or support parts) with prices excluding tax. The safety part cost ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04), the outside stopper ¥1,000, (about $6 at ¥156 = $1, rate as of 2026-09-04) and the internal stopper and penis-head support part ¥1,500 (about $10 at ¥156 = $1, rate as of 2026-09-04) each. The safety part itself was free; its charge covered the hole processing.
Previously, the support part cost ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) plus ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) for thread connection, making the published price ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04). Its new price was ¥1,500 (about $10 at ¥156 = $1, rate as of 2026-09-04). Mr. Okada offered connection at no extra charge when these accessories were purchased together with a main chip.
(Source: ok-lab's diary, published June 2018)
https://ok-lab.hatenablog.com/entry/20180630/1530342059
Custom chip discounts replaced triple pricing in July 2018
In an entry published in July 2018, bending charges for screw-shaped and curved-glass custom chips became ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) excluding tax. This replaced custom pricing at 3 times the standard product price. Mr. Okada promised future-order credits for overpayments: ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) for glass and ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) for resin.
Both shapes remained custom-only, and he had no plans for a resin version of the curved-glass chip. He attributed the price change to greater confidence in making the bends. Mr. Okada advised allowing for potentially long delivery delays.
(Source: ok-lab's diary, published July 2018)
https://ok-lab.hatenablog.com/entry/20180721/1532152353
Glass twist price cuts left resin charges unchanged in August 2018
In an entry published in August 2018, glass twist processing fell from ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) to ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04). Resin processing remained ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) per chip because, according to Mr. Okada, it still required substantial work.
The short glass screw chip was removed from the regular product list, although custom processing remained available for ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04). The glass twist was planned for regular sale. Mr. Okada directed buyers wanting planned products before launch to request them by email.
(Source: ok-lab's diary, published August 2018)
https://ok-lab.hatenablog.com/entry/20180825/1535182626
Long vibrating chips received a proposed trial discount in January 2019
In an entry published in January 2019, Mr. Okada proposed limited sales of long chips with an embedded vibration motor and cable. Their price would match the nylon-thread version, with both the sales period and quantity limited. The proposal depended on further testing, rather than a completed durability assessment.
Only long chips qualified, and the stated repair charge after failure was ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04). Mr. Okada said reports of failures would help him assess durability.
(Source: ok-lab's diary, published January 2019)
https://ok-lab.hatenablog.com/entry/20190105/1546673405
Cable stopper price cuts excluded earlier buyers in July 2019
In an entry published in July 2019, the stopper for parallel cables was reduced to ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax. Mr. Okada said eliminating a production step made the reduction possible.
Earlier custom-order purchasers would receive no refund. Mr. Okada also cautioned that testing was still insufficient for a firm recommendation about the stopper’s placement.
(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/20/151609
PayPal cashback had a firm end date in December 2019
In an entry published in December 2019, Mr. Okada announced 5% cashback through the online payment service PayPal. Eligible payments ran from December 13, 2019, through June 30, 2020.
The announcement included eligibility conditions, so the percentage was not an unconditional reduction for every order. Mr. Okada advised checking PayPal’s detailed conditions.
(Source: ok-lab's diary, published December 2019)
https://ok-lab.hatenablog.com/entry/2019/12/21/150646
Controller discounts covered a temporary substitute in March 2022
In an entry published in March 2022, Mr. Okada reported that most controllers in a newly opened batch were faulty. He arranged a substitute while waiting for working replacements. The substitute offered 120 vibration modes.
Its planned selling price was ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04) excluding tax, but he announced temporary supply at ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04). That arrangement would last until working versions of the original controller arrived. Mr. Okada referred buyers to demonstration videos comparing the controllers.
(Source: ok-lab's diary, published March 2022)
https://ok-lab.hatenablog.com/entry/2022/03/12/122940
The maker's answer to OK Prostate Chip discounts
The maker reduced specific production or component charges, with conditions attached to each design.
Electrode price cuts followed simpler production in March 2019
In an entry published in March 2019, Mr. Okada changed how electrodes (contacts delivering electrical stimulation) were incorporated into chips. Charges excluding tax fell from ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04) to ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04) for 1 electrode per chip. For 2 electrodes per chip, they fell from ¥8,000 (about $51 at ¥156 = $1, rate as of 2026-09-04) to ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04).
He attributed the reductions to easier production using attached electrodes instead of embedded ones. He described their function as largely unchanged, but their appearance as slightly worse. Mr. Okada cautioned that he could not personally test these prototypes.
(Source: ok-lab's diary, published March 2019)
https://ok-lab.hatenablog.com/entry/2019/03/16/165528
Cable holder discounts followed removal of ring fittings in October 2023
In an entry published in October 2023, Mr. Okada announced a redesigned cable holder (an external fitting that holds tubing in position). He discontinued its cotton-pearl ring connection and adopted a tube-based attachment. This reduced the price by ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04), bringing it to ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) excluding tax.
He said the redesigned holder could accommodate several connector types. Mr. Okada cautioned that buyers would face additional work if its attachment tubing came loose.
(Source: ok-lab's diary, published October 2023)
https://ok-lab.hatenablog.com/entry/2023/10/21/123054
Cover-free custom discounts still carried a reservation in May 2024
In an entry published in May 2024, the standard three-part wire-linked chip cost ¥13,000 (about $83 at ¥156 = $1, rate as of 2026-09-04) excluding tax. That included three chips, their connecting wire, and a tube cover (a covering over that wire). A flat central chip reduced the quote by ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04); omitting the cover also reduced it by ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04).
Other size changes added ¥300 (about $2 at ¥156 = $1, rate as of 2026-09-04) per altered location. Mr. Okada recommended keeping the wire cover because he expected exposed wire to be uncomfortable in a sensitive internal area.
(Source: ok-lab's diary, published May 2024)
https://ok-lab.hatenablog.com/entry/2024/05/18/122913
Aluminum electrode discounts depended on omitted parts in August 2024
In an entry published in August 2024, Mr. Okada priced a connected pair of chips with aluminum electrodes from ¥10,000 (about $64 at ¥156 = $1, rate as of 2026-09-04) excluding tax. Omitting the plug reduced the quote by ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04). A resin cover between the chips added ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04).
Joining the external cables together cost ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) per 5cm. These were separate choices in that custom design’s price breakdown. Mr. Okada suggested shorter chip versions for beginners.
(Source: ok-lab's diary, published August 2024)
https://ok-lab.hatenablog.com/entry/2024/08/10/122913
Threadless chip discounts came with unresolved safety questions in March 2025
In an entry published in March 2025, Mr. Okada priced a loop-ended wire extension at ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) excluding tax. This shaped wire ending in a loop was proposed for a design without nylon thread. Omitting the thread reduced the price by ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04), and his example cost ¥9,000 (about $58 at ¥156 = $1, rate as of 2026-09-04).
He offered 20cm of temporary nylon thread free to customers wanting it pending safety confirmation. Mr. Okada cautioned that this temporary attachment was not fixed with resin.
(Source: ok-lab's diary, published March 2025)
https://ok-lab.hatenablog.com/entry/2025/03/29/122912
How OK Prostate Chip discounts changed over time
| Published | What the diary said then |
|---|---|
| Jun 2018 | Three-hole processing changed accessory charges and lowered the support-part price. |
| Jul 2018 | Standardized bending charges replaced triple pricing; earlier overpayments became future-order credits. |
| Aug 2018 | Glass twist processing became cheaper; the glass screw moved to custom-only ordering. |
| Jan 2019 | Limited trial pricing was proposed for long vibrating chips. |
| Mar 2019 | Easier electrode production lowered charges. |
| Jul 2019 | A production change lowered cable-stopper pricing without refunds. |
| Dec 2019 | PayPal cashback was announced with payment dates and eligibility conditions. |
| Mar 2022 | Faulty controllers prompted temporary substitution at the original controller’s price. |
| Oct 2023 | Removing the ring connection lowered the redesigned cable holder’s price. |
| Aug 2026 | Standard production was proposed at about ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) less than custom pricing. |
The August 2026 entry describes a proposed standard model. The diary does not say what the current state is.
OK Prostate Chip products related to OK Prostate Chip discounts
The September 2026 list gives current prices for products involved in the customer cases below.
Products that appear in these entries
| Product (official name) | Price incl. tax | Relation to this topic |
|---|---|---|
| Two-thread safety chip with connection (二本糸用セーフティチップ（生体適合樹脂）接続オプション込み) | ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04) | In December 2021, this requested part proved unsuitable for a custom loop assembly, prompting a cheaper revised quote. |
| Medium-length vibrating ceramic chip (OKプロステート核振チップ 陶器素材セミロングタイプ) | ¥6,600 (about $42 at ¥156 = $1, rate as of 2026-09-04) | In February 2022, this chip appeared in the two-chip order discounted because only one controller was requested. |
| Vibrating ceramic awakening chip (OKプロステート核振チップ 陶器素材覚醒タイプ) | ¥7,700 (about $49 at ¥156 = $1, rate as of 2026-09-04) | In February 2022, this was the other vibrating chip in that controller-related discount case. |
(Source: ok-lab's diary, published December 2021)
https://ok-lab.hatenablog.com/entry/2021/12/04/124140
(Source: ok-lab's diary, published February 2022)
https://ok-lab.hatenablog.com/entry/2022/02/12/123441
Products the diary mentioned as alternatives
The diary names no alternative.
| Historical builds or versions | Current-list status |
|---|---|
| Glass screw and curved-glass custom chips; long vibrating trial chip; electrode prototypes; October 2023 cable holder; three-part wire-linked chip; threadless build; proposed standard model | No matching product can be confirmed on the current list. |
Common worries about OK Prostate Chip discounts
The recorded customer discounts depended on the requested design and which parts the buyer needed.
"Can a custom chip discount make an electrode prototype free?"
In an entry published in March 2019, a customer asked whether an electrode-equipped chip could be made for them. Mr. Okada offered a free sample if their request matched something he wanted to test.
The diary does not record whether this customer received a sample. Mr. Okada directed requests outside his planned testing toward paid custom work.
(Source: ok-lab's diary, published March 2019)
https://ok-lab.hatenablog.com/entry/2019/03/16/165528
"Could a different assembly bring a custom chip discount?"
In an entry published in December 2021, a customer requested a loop assembly using two-thread safety chips, parts intended for a two-thread arrangement. Mr. Okada replied that the requested assembly needed 4 threads, making those parts unsuitable.
The customer accepted the established custom loop design, and the quoted amount fell by ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04). Mr. Okada’s proposed solution was a change to that earlier assembly.
(Source: ok-lab's diary, published December 2021)
https://ok-lab.hatenablog.com/entry/2021/12/04/124140
"Can a controller discount reduce a two-chip order?"
In an entry published in February 2022, a customer ordered two vibrating ceramic chips while requesting only one controller. Mr. Okada reduced the quoted amount by ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04).
The diary does not record how that order later performed in use. Mr. Okada’s price adjustment specifically covered the request for one controller across the two-chip order.
(Source: ok-lab's diary, published February 2022)
https://ok-lab.hatenablog.com/entry/2022/02/12/123441
Buying from outside Japan
OK Lab ships internationally to countries covered by Japan Post's EMS courier service. Overseas orders are paid in advance by PayPal. Each order carries a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping is charged on top. These terms come from OK Lab's official sales-terms page (written here as plain text, not a link: ok-lab.net/docs/law), checked on September 7, 2026; confirm them on the official store before you order, because they can change.
Summary of this article
| What you wanted to know | The answer |
|---|---|
| Are discounts recorded? | Yes: selected parts, custom configurations, production changes, and temporary promotions received lower prices. |
| What is the product? | A urethral device made and sold by OK Lab in Japan, with prices in Japanese yen. |
| Which terms matter? | Accessories, controllers, electrodes, covers, and wire extensions can represent separate parts of a quote. |
| What happened in the price cases? | Some reductions changed regular charges; others applied only during a trial or supply problem. |
| What was the maker’s approach? | Specific design and production changes reduced charges, sometimes with reservations. |
| How did pricing change over time? | The diary moved from accessory and processing reductions to configuration discounts and proposed standard production. |
| What can be confirmed today? | The supplied September 2026 list confirms the tabled products and their tax-inclusive prices. |
| What did customers ask? | They asked about free prototypes, alternative assemblies, and fewer controllers. |
| How do overseas purchases work? | Advance PayPal payment, a handling fee, and additional EMS shipping apply under the supplied sales terms. |
Source: ok-lab's diary (Okada Comfortable Life Laboratory). The original entries are in Japanese; quotations on this page are translated. Photos and videos are on the original entries.
This article is a summary of the maker's development diary. The product is not a medical device and no result is guaranteed. If anything feels wrong or worries you, see a doctor. Prices, specifications and cautions change, so confirm the latest information on the official blog and the official site. Questions about ordering and shipping go to the seller.