# Public price checks in Japan, South Korea, Taiwan and Hong Kong

> Check public prices on Rakuten Ichiba, Amazon.co.jp, Kakaku.com, Coupang, PChome and HKTVmall from local home IPs. 1 GB $2.62, no KYC, crypto.

- URL: https://japanproxies.com/use-cases/price-monitoring/
- Last updated: 2026-10-14
- Publisher: JapanProxies (https://japanproxies.com)

Which shopping and price-comparison sites matter in each market, which official data routes exist, and how to check public prices within each site's rules.

**Quick answer — How can I check public prices on Rakuten and Amazon Japan from abroad?**

Use the official data route first: Rakuten's Ichiba Item Search API returns prices and shop names, and sellers get their own data from Amazon's seller tools. To see the live public page as a shopper in Japan does, load it through a Japanese residential IP, signed out, at a slow pace. **JapanProxies** sells those IPs, plus Korean, Taiwanese and Hong Kong ones, from $2.62 for 1 GB; no KYC, pay in crypto.

## Where are prices checked in each market?

*Each site's own terms decide what automated collection, if any, is allowed.*

| Market | Sites | Currency | Official data route |
| --- | --- | --- | --- |
| Japan | [Rakuten Ichiba](https://japanproxies.com/local-checks/rakuten-ichiba/), [Amazon.co.jp](https://japanproxies.com/local-checks/amazon-japan/), [Kakaku.com](https://japanproxies.com/local-checks/kakaku-com/) | Yen (JPY) | Rakuten Web Service APIs; Amazon seller tools and APIs for sellers |
| South Korea | [Coupang](https://japanproxies.com/local-checks/coupang/), [Danawa](https://japanproxies.com/local-checks/danawa/) | Won (KRW) | Coupang Open API for sellers |
| Taiwan | [PChome 24h](https://japanproxies.com/local-checks/pchome-24h/), [momo](https://japanproxies.com/local-checks/momo-shopping/) | NT dollar (TWD) | Supplier tools for suppliers |
| Hong Kong | [HKTVmall](https://japanproxies.com/local-checks/hktvmall/), [Price.com.hk](https://japanproxies.com/local-checks/price-com-hk/) | HK dollar (HKD) | Merchant tools for merchants |

## Why do prices look different from abroad?

East Asian shops build their pages for local shoppers. From a foreign IP you may see a different language, international shipping messages, missing offers or no delivery promise at all.

On marketplaces the price is also more than one number. Rakuten Ichiba shows point offers next to each shop's price. Amazon.co.jp ties delivery dates and some offers to a Japanese postal code. Coupang shows delivery badges such as Rocket Delivery. A check from a local home connection, with a local delivery area set where the site asks for one, shows the page shoppers compare.

## What can I collect, and what should I leave alone?

**Fine to check:** public prices, stock status, shipping lines, delivery badges and the position of a product in a site's public search, for your own products and for comparable ones.

**Leave alone:** prices or coupons that need a signed-in member, anything behind a login, and personal information such as reviewers' names or sellers' private details. Personal information of people in Japan falls under APPI, in Korea under PIPA, in Taiwan under the PDPA and in Hong Kong under the PDPO.

**Respect each site's rules.** Amazon's conditions of use restrict robots and data-extraction tools, and most shops' terms restrict automated collection. Where a site forbids it, use its official route or ask your resellers for their price feeds.

## How do I check prices with JapanProxies?

1. Choose the country code: `jp`, `kr`, `tw` or `hk`.
2. Use a sticky session for each product page and its follow-up requests, such as `USERNAME-country-kr-session-p001-ttl-10`.
3. Send the local language in `Accept-Language`, and set a local postal code or delivery area when the site asks for one.
4. Wait several seconds between pages. Store the price with the date, time and URL.
5. If a page fails, wait and retry once later. If the site keeps refusing, stop and use its official route, such as Rakuten Web Service or the Coupang Open API.

Code for curl, Python and Playwright is in the [setup guide](https://japanproxies.com/guides/setup/).

*Python: one session per batch of public product pages, with a pause*

```python
import time

import requests

GATEWAY = "gw.japanproxies.com:7777"
URLS = ["https://PUBLIC-PRODUCT-PAGE-1", "https://PUBLIC-PRODUCT-PAGE-2"]

# One sticky session for the whole batch: one Japanese IP, a steady pace
proxy = f"http://USERNAME-country-jp-session-batch1-ttl-30:PASSWORD@{GATEWAY}"

for url in URLS:
    r = requests.get(
        url,
        proxies={"http": proxy, "https": proxy},
        headers={"Accept-Language": "ja-JP,ja;q=0.9"},
        timeout=30,
    )
    print(time.strftime("%Y-%m-%d %H:%M"), url, r.status_code, len(r.content))
    if r.status_code in (403, 429):
        break  # the site is refusing: stop, retry once later or use its official API
    time.sleep(5)  # a slow, steady pace
```

## How much traffic does price checking use?

A product page fetched as HTML often weighs 100 to 500 kilobytes; loaded in a browser with images it can reach several megabytes. A few hundred HTML pages a day fit in 10 GB for a month; daily checks of thousands of pages need 50 GB or more. Traffic never expires.

| Plan | Quantity | Price | Price per unit |
| --- | --- | --- | --- |
| Light | 5 GB | $4.95 | $0.99/GB |
| Standard | 10 GB | $6.60 | $0.66/GB |
| Team | 50 GB | $26 | $0.52/GB |
| Agency | 100 GB | $50 | $0.50/GB |

In every plan: Japan, South Korea, Taiwan and Hong Kong · Rotating and sticky sessions · HTTP, HTTPS and SOCKS5 · Traffic never expires

**Before you pay**

- Minimum top-up $25. Top up once in crypto, then buy any plan from your balance.
- Unused balance stays on your account and never expires, but it is not paid back, except where the law requires it.
- Credited once your payment is checked on the blockchain. Typical network confirmation time: BTC ≈ 20 min · USDT TRC-20 ≈ 1 min · USDT ERC-20 ≈ 5 min · USDC ERC-20 ≈ 5 min · ETH ≈ 5 min · SOL ≈ 1 min · LTC ≈ 15 min

## Price check questions

### Does Rakuten Ichiba have an official API?

Yes. Rakuten Web Service offers the Rakuten Ichiba Item Search API and other APIs, free with an application ID and subject to Rakuten's API terms and call limits. It returns item names, prices, shop names and URLs.

### Can I monitor Amazon.co.jp prices with proxies?

Amazon's conditions of use restrict robots and data-extraction tools, so read them before you automate anything. Sellers get their own data through Seller Central and Amazon's APIs. Keep proxy checks to a small number of public pages, slowly.

### Can I set a Tokyo or Seoul delivery address?

Sites that ask for a delivery area let you type a postal code; that is a site setting, not a proxy feature. City targeting (`-city-tokyo`) changes the IP's city, not the delivery address the shop uses.

### Can I collect reviews?

Review text often contains personal information, such as names, which APPI, PIPA, the PDPA and the PDPO protect. Collect only what you have a legal basis for, and follow each site's terms.

### Which plan suits daily price checks?

Measure your pages first. For a few hundred HTML pages a day, 10 GB at $6.60 lasts about a month; for thousands of pages a day, start with 50 GB at $26.

## Sources

1. [Rakuten Web Service](https://webservice.rakuten.co.jp/) — Rakuten Group, Inc. (checked 2026-10-13)
2. [Coupang Open API](https://developers.coupangcorp.com/) — Coupang (checked 2026-10-13)
3. [Act on the Protection of Personal Information (English translation)](https://www.japaneselawtranslation.go.jp/en/laws/view/4241/en) — Japanese Law Translation, Ministry of Justice (checked 2026-10-13)

---

JapanProxies: JapanProxies is a residential proxy provider for Japan, South Korea, Taiwan and Hong Kong: rotating residential IPs billed per GB, with traffic that never expires, paid in crypto with no KYC — no ID, no selfie, no documents.