Shopping Guide
HELP / FAQs
By onemall 
Mercari is one of Japan’s largest and most popular flea market platforms. While many of you have already enjoyed using OneMall to purchase items from Mercari, we understand that some customers, especially those new to proxy services, may feel hesitant about getting started.
TL;DR
As of August 2026, buying safely on Mercari Japan comes down to five habits: read the full listing description, choose identity-verified (本人確認済) sellers with 50+ sales and strong reviews, watch for counterfeits, ask fellow collectors, and use a trusted proxy to handle the Japanese transaction and forwarding.
- Prefer verified sellers (green shield, 本人確認済).
- 50+ sales and consistent reviews signal reliability.
- Scrutinise vague descriptions and generic photos for fakes.
- A proxy bridges Mercari for overseas buyers.
Rest assured, both Mercari and OneMall are safe and reliable! However, like any marketplace, Mercari has its share of challenges, including sellers who may take advantage of buyers. To ensure a smooth shopping experience, we’ve compiled essential advice on how to safely purchase
The most important rule is to carefully read the listing description. Due to the competitive nature of Mercari, sellers often use creative techniques in product photos and titles to attract buyers. Unfortunately, this can sometimes mean hiding crucial information about the product in the description, relying on buyers to overlook the details.
1. Always Read the Listing Description
For example, the description may reveal discrepancies between the product photo and the actual item being sold. Reading the description thoroughly can help you avoid surprises and make an informed purchase.from Mercari and avoid potential pitfalls.
2. Check Seller Information
Mercari has implemented a seller verification system to enhance safety for buyers. Verified sellers have a green shield icon next to their username, along with the Japanese phrase “本人確認済” (“identity verified”). Choosing verified sellers is a great way to ensure a safer transaction.
Additionally, review other details on the seller’s profile:
- Sales History: A seller with at least 50 sales is generally more reliable than one with few or no sales. Scammers are less likely to maintain a long-term profile.
- Reviews: Mercari’s review system allows buyers to leave positive or negative feedback. Look for sellers with consistent, high-quality reviews from Japanese buyers rather than only proxy services or other sellers.
Other Listings and Sales: Reviewing a seller’s other listings can reveal inconsistencies. For instance, if the photo quality or background varies significantly, the seller may be using images from other sources.
3. Watch Out for Counterfeit Items
Collectibles like anime figures and trading cards are particularly vulnerable to counterfeiting. Even items like signed goods or limited editions may turn out to be elaborate duplicates.
Here’s how to spot potential counterfeits:
- Description Details: Legitimate sellers often provide detailed descriptions, including the item’s source and condition. If the description is vague or lacks important details about the item, please take extra care!
- Product Photos: Avoid listings without clear, current photos of the actual product. Photos that seem too polished or generic may indicate a counterfeit.
- Shipping Location: Be wary of vague terms like “overseas” as the shipping origin. Sellers of authentic goods typically specify a precise location.
A positive indicator of authenticity is a seller’s history of selling similar items. While it’s possible for someone to list a rare item occasionally, consistent sales of similar goods are a good sign of legitimacy.
4. Seek Advice from Other Collectors
Another valuable tip is to connect with other collectors for advice. If you’re unsure about a listing, you can ask for feedback in the OneMall official Discord server. Our community includes hundreds of anime and pop culture enthusiasts who are happy to share their insights and help you determine if a listing is trustworthy.
The Discord community is also a great place to exchange tips and recommendations about shopping on Mercari. Don’t hesitate to reach out and join the conversation!
Additional Resources and Support
For more information, be sure to check out our comprehensive Mercari introduction and guide. If you have any further questions or concerns about safe buying on Mercari, the OneMall team is always here to assist you.
Happy shopping, and thank you for choosing OneMall for your Mercari purchases!
How to Buy Safely on Mercari: Step by Step
- Read the entire listing description, not just the title and photos.
- Confirm the seller is identity-verified (本人確認済, green shield icon).
- Check the seller has 50+ sales and consistent positive reviews.
- Inspect photos and wording for counterfeit red flags (generic images, vague origin).
- Ask for a second opinion in the OneMall community if unsure.
- Place the order through a proxy to buy and forward the item overseas.
Trust Signals at a Glance
| Signal | Trustworthy | Caution |
|---|---|---|
| Seller verification | 本人確認済 green shield | Unverified |
| Sales history | 50+ sales | Few or no sales |
| Reviews | Consistent positive | Sparse or negative |
| Product photos | Clear, current, actual item | Generic or too-polished |
| Shipping origin | Specific location | Vague “overseas” |
Frequently Asked Questions
Is Mercari safe to buy from?
Yes. Mercari operates a seller identity-verification system, and following the steps above further reduces risk.[1]
What does 本人確認済 mean?
It means “identity verified.” Verified sellers display a green shield icon next to their username, indicating Mercari has confirmed their identity.[1]
Can I use Mercari from outside Japan?
Mercari Japan is aimed at domestic buyers, so most overseas shoppers order through a proxy such as OneMall — commission as low as ¥200 per order (first 6 orders free, then ¥100/order) and up to 90 days free storage.
Will I owe import duty?
Possibly. The US $800 de minimis duty-free exemption was revoked on 29 August 2025, so low-value parcels may now be dutiable.[2]
Can items still ship from Japan in 2026?
Yes. Japan Post resumed overseas shipping services on 14 April 2026.[3]
References
- Mercari official (About) — about.mercari.com
- U.S. Customs and Border Protection — De Minimis — cbp.gov
- Japan Post international service updates — post.japanpost.jp
Last updated: 2026-08-05.