![How do I pay for a custom order? | Use the quoted price adjustment [OK Prostate Chip]](/img/a/T0282/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 "paying for a custom order" 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 adjustment pays for quoted custom work, including charges missing from the selected standard items.
- Mr. Okada advises asking about unclear amounts and identifying the requested customization in the order message.
- The current list includes ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) and ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) price-adjustment items, both including tax.
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 |
|---|---|
| Price adjustment | A store payment item used to pay a quoted custom charge or a difference from the selected product price. |
| Horn modification | Rubber coating on a chip's nylon thread, forming a projecting section whose length affected the custom charge. |
| Bump option | A paid change to a chip with surface bumps; the ceramic set discussed below required it for both parts. |
| Four-wire support cable | A special cable construction requested in place of the chip's nylon thread. |
| USB connector | An electrical connector used to connect the cables in the April 2022 custom order. |
| Apple guide rod | A separate custom aid for chip placement, called the Apple bougie in the diary. |
| Apple stopper | An optional stop fitted to a chip or cable. Its intended stopping function: The diary does not explain this. |
What happens: custom order payment
The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. Price adjustment is an item in the company's own online store for paying custom charges. Those charges can cover special connections, electrical contacts, or changes to parts attached to the chip. The adjustment item belongs to the order, while the quoted work concerns the device or its connected parts.
Custom order payment through PayPal used an additional resin purchase
In an entry published in February 2018, a customer wanted an auxiliary chip added to a connected pair. For non-long custom builds, prices were ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) for glass, ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) for resin, and ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) for thread connection, all excluding tax. The auxiliary chip cost ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) extra, with ¥2,160 (about $14 at ¥156 = $1, rate as of 2026-09-04) specified for payment by bank transfer.
Mr. Okada wrote that PayPal, the online payment service, could not change the payment amount. The diary does not record whether this customer's order was completed. Mr. Okada advised buying the equal-priced single-chip resin model and identifying the custom change in the order message.
(Source: ok-lab's diary, published February 2018)
https://ok-lab.hatenablog.com/entry/20180221/1519195742
Custom order payment for horn coating depended on its length
In an entry published in October 2020, Mr. Okada priced horn modification (rubber coating forming a projecting section on nylon thread). Lengths up to 2mm were free. The stated bands were ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax for 3–10mm and ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax for 11–20mm.
For lengths of 3mm or more, he advised specifying the length and buying the corresponding price adjustment. His note excluded peeling rubber from repair coverage. Mr. Okada's stated fallback was the original chip without that coating.
(Source: ok-lab's diary, published October 2020)
https://ok-lab.hatenablog.com/entry/2020/10/31/121353
Custom order payment for the ceramic set included separate connection work
In an entry published in December 2020, Mr. Okada introduced a two-chip ceramic set (Sea Slug ver.5). He said surface bumps were standard and there was no version without them. Sales were planned to begin the following week.
His ordering arrangement used separate purchases of the semi-long and short ceramic chips. It also required 2 bump options (paid changes to chips with surface bumps) and ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax for horn modification. Mr. Okada directed customers to pay that modification charge through price adjustment.
(Source: ok-lab's diary, published December 2020)
https://ok-lab.hatenablog.com/entry/2020/12/19/132929
Custom order payment did not prevent a wiring error before shipment
In an entry published in April 2022, a customer wanted 2 cables leading separately to 2 USB connectors (electrical cable connectors). Mr. Okada wrote that a communication mix-up had instead produced 2 cables joining 1 connector. The entry does not record delivery of the corrected item. Mr. Okada said he would correct the wiring before sending the order.
(Source: ok-lab's diary, published April 2022)
https://ok-lab.hatenablog.com/entry/2022/04/09/123458
Custom order payment could include model differences and special ceramic firing
In an entry published in March 2023, a customer requested a replacement after a custom connected chip broke against a ceramic toilet. The request named both a ceramic shape (Sea Slug ver.4) and the two-chip design (Sea Slug ver.5). Mr. Okada explained that the ¥3,300 (about $21 at ¥156 = $1, rate as of 2026-09-04) adjustment covered several separate charges.
These included ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) for the difference from a short chip and ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) for connection work. He also listed firing a ceramic part made for connection at both ends, without assigning that component a separate price. The diary does not record how the replacement performed.
(Source: ok-lab's diary, published March 2023)
https://ok-lab.hatenablog.com/entry/2023/03/18/122146
The maker's answer to custom order payment
Mr. Okada tied payments to specified custom work, while retaining limits on what could be made.
Custom order quotes allowed delays, refusals, and small size differences
In an entry published in February 2018, Mr. Okada explained that custom orders took extra time and sometimes required repeated attempts. He warned that busy periods could push custom work behind other orders. He could also refuse requests he judged technically difficult. His ordering guidance allowed differences of about 1mm in width and 2mm in length from the requested dimensions.
(Source: ok-lab's diary, published February 2018)
https://ok-lab.hatenablog.com/entry/20180221/1519195742
Custom order surcharges applied after the April 2022 pricing announcement
In an entry published in April 2022, a customer asked about the surcharge for a 12cm four-wire support cable. This was a special cable construction requested in place of nylon thread. Mr. Okada said that customer's order carried no surcharge because it had been placed while the work was free. He advised that orders after publication would be charged, quoting ¥3,300 (about $21 at ¥156 = $1, rate as of 2026-09-04) for that length.
(Source: ok-lab's diary, published April 2022)
https://ok-lab.hatenablog.com/entry/2022/04/23/123121
Custom order payment could not change bumps fixed by ceramic molds
In an entry published in August 2026, a customer requested a different bump pattern on a ceramic double-twist chip. The request specified small bumps around the center and smooth areas elsewhere. Mr. Okada said ceramic chips were formed in molds, so bump positions and shapes could not be changed. The diary does not record whether the customer accepted that limitation.
Mr. Okada's reply asked the customer to accept that limit on customization.
(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/01/122916
How custom order payment changed over time
| Published | What the diary said then |
|---|---|
| Apr 2022 | A prototype four-wire cable had no surcharge and fixed section lengths. |
| Jul 2022 | Upgraded six-wire cable quotes: 20cm cost ¥6,600 (about $42 at ¥156 = $1, rate as of 2026-09-04); 10cm cost ¥3,300 (about $21 at ¥156 = $1, rate as of 2026-09-04). |
| Dec 2022 | Each Sea Slug version had one size; the quoted price was ¥4,400 (about $28 at ¥156 = $1, rate as of 2026-09-04). |
| Oct 2023 | The custom ceramic shape (Revelation C) cost ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) above the plain semi-long chip. |
| Nov 2025 | Front stopper plus reinforcement: ¥3,300 (about $21 at ¥156 = $1, rate as of 2026-09-04); front and rear stoppers plus reinforcement: ¥5,500 (about $35 at ¥156 = $1, rate as of 2026-09-04). |
| Jan 2026 | Sea Slug ver.3 mod-2 required a ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04) correction from semi-long to long pricing. |
| Feb 2026 | A custom electrical-contact chip was remade after an integrated rear stopper was overlooked. |
| Aug 2026 | A 30cm Apple guide rod, ver.2, cost ¥4,400 (about $28 at ¥156 = $1, rate as of 2026-09-04) through price adjustment. |
OK Prostate Chip products related to custom order payment
The current list retains payment adjustments and named options used in these cases; custom-build prices remain dated quotations.
Products that appear in these entries
| Product (official name) | Price incl. tax | Relation to this topic |
|---|---|---|
| Price adjustment, smaller amount (差額調整) | ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) | In November 2020, this amount paid for a 5mm horn modification. |
| Price adjustment, larger amount (差額調整) | ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) | In November 2020, this amount paid for a requested 90-degree horn that Mr. Okada made at a gentler angle. |
| Single-chip resin model (OKプロステートチップ 樹脂素材1チップタイプ) | ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04) | In February 2018, Mr. Okada named this item as a payment substitute for an auxiliary-chip addition. |
| Additional nylon thread option (ナイロン糸追加（オプション）) | ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) | In October 2020, a customer bought this option after requesting threads from separate attachment points. |
| Surface-bump option (イボ付きチップに変更オプション) | ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) | In December 2020, Mr. Okada required two purchases of this option when ordering the ceramic set. |
The ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) price-adjustment item is listed in OK Lab's official store.
The ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) price-adjustment item is listed in OK Lab's official store.
(Source: ok-lab's diary, published February 2018)
https://ok-lab.hatenablog.com/entry/20180221/1519195742
(Source: ok-lab's diary, published October 2020)
https://ok-lab.hatenablog.com/entry/2020/10/17/121023
(Source: ok-lab's diary, published November 2020)
https://ok-lab.hatenablog.com/entry/2020/11/28/121505
(Source: ok-lab's diary, published December 2020)
https://ok-lab.hatenablog.com/entry/2020/12/19/132929
Products the diary mentioned as alternatives
| Product (official name) | Price incl. tax | Relation to this topic |
|---|---|---|
| Parallel-cable stopper option (平行ケーブル用ストッパー追加（オプション）) | ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) | In August 2026, Mr. Okada offered the L-size version instead of an Apple stopper that would become too thick. |
(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/01/122916
Custom ceramic designs and combinations, custom cable and wire-loop builds, Apple guide rods, and Apple stoppers:
No matching product can be confirmed on the current list.
Common worries about custom order payment
The diary answers checkout questions, although some exchanges stop at a quotation or a proposed change.
"How does custom order payment work without a listed option?"
In an entry published in October 2020, a customer wanted a resin chip with electrical contacts and a plug. The customer could not find those modifications among the store's options and used price adjustment based on an earlier entry. Mr. Okada replied that electrical-contact chips were custom-only at that time and could be paid for through price adjustment or similar arrangements. He advised contacting OK Lab when the amount was unclear.
(Source: ok-lab's diary, published October 2020)
https://ok-lab.hatenablog.com/entry/2020/10/17/121023
"Can custom order payment cover an entirely four-wire cable?"
In an entry published in April 2022, a customer requested 35cm of cable, entirely in the four-wire construction. The request was to replace the thread on a custom ceramic chip. Mr. Okada replied that the four-wire section had a maximum length of 25cm. He specified ordinary cable for the remaining length.
(Source: ok-lab's diary, published April 2022)
https://ok-lab.hatenablog.com/entry/2022/04/23/123121
"Does custom order payment make thicker wires a better choice?"
In an entry published in April 2025, a customer asked about wire thickness for a device made from wire loops without a solid chip. The customer was considering 0.3mm or 0.4mm wire in a two-wire build. Mr. Okada quoted ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04) for the two-wire modification regardless of thickness.
He wrote that two 0.4mm wires felt too strong for him to tolerate for long periods. The customer then chose 0.3mm, but the diary does not record their experience with the finished device. Mr. Okada said individual responses differed, so he could not recommend one thickness for everyone.
(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/12/122910
"Can custom order payment cover a longer guide rod?"
In an entry published in January 2026, a customer requested a 35cm custom guide rod (Apple bougie) because the earlier rod was too short. OK Lab's staff quoted ¥3,300 (about $21 at ¥156 = $1, rate as of 2026-09-04) for lengths up to 30cm, explaining that longer work would greatly increase production time. The customer chose 30cm and asked whether price adjustment could cover payment.
The customer also requested an estimate for greater lengths. The entry does not explicitly answer the checkout question or report experience with the longer rod. Mr. Okada provisionally quoted ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) excluding tax up to 35cm, warning that difficult builds might still be refused.
(Source: ok-lab's diary, published January 2026)
https://ok-lab.hatenablog.com/entry/2026/01/03/122924
"Can custom order payment cover an Apple stopper on cables?"
In an entry published in August 2026, a customer wanted an Apple stopper on a motorized ceramic chip, near its standard width and thickness. This was an optional stop attached to a chip or supplied separately. Mr. Okada explained that attaching it to parallel cables would produce a thickness of 9mm or more. He proposed the L-size parallel-cable stopper instead, and the customer accepted the change from the ¥4,400 (about $28 at ¥156 = $1, rate as of 2026-09-04) addition to the ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) option.
(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/01/122916
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 |
|---|---|
| The short answer | Price adjustment covers the custom charges specified for an order. |
| What the product is | A urethral device made and sold by OK Lab in Japan. |
| What the terms mean | Payment items, optional parts, and custom cable constructions have different roles. |
| What happens with payment | A charge can cover an addition, connection work, or a difference between chip models. |
| What the maker says | Unclear amounts merit an inquiry; production limits still apply. |
| What changed over time | Free development work acquired surcharges, and later entries itemized newer custom additions. |
| Which current products relate | The current list includes adjustment items and the specific options shown above. |
| What customers asked | Payment did not remove limits on cable length, wire choice, or stopper thickness. |
| How overseas buying works | Advance PayPal payment, a handling fee, and EMS shipping charges apply. |
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.