Mercari
Depends
Confidence: Medium
Use it if you casually buy or sell secondhand items and accept a flat 10% fee plus imperfect support.
New check
Comparison
Mercari vs Poshmark
Mercari and Poshmark both land on Depends.
Poshmark
Depends
Confidence: Medium
Fine for casual sellers clearing closets who accept a 20% cut in exchange for a built-in audience.
| Compare | ||
|---|---|---|
| Verdict | Depends | Depends |
| Best for | Casual sellers clearing closets | Casual closet cleanouts |
| Who it's not for | High-volume professional resellers | High-volume resellers . the 20% cut eats margins |
| Privacy | Legitimate service overall, but two improper-authorization CVEs (CVSS 7.5) and a 2021 Codecov-linked data breach are on record.⁸ | 2018 breach forced password resets; a 2024 arbitrary-file-upload CVE and bot-traffic disruptions are also on record. |
| Support quality | Trustpilot and BBB report unhelpful support | BBB disputes and 10,195 PissedConsumer reviews |
| Public sentiment | Users like the app's simplicity and authentication, but many complain about fee changes, support quality, and seller treatment.⁴ | Sentiment skews negative on complaint sites and Reddit, with recurring themes of high fees, weak support, and 2023-2025 platform changes frustrating former power users.15 |
| Biggest gotcha | New fee structure since January 2025 added buyer fees; some sellers say it's no longer worth cross-posting³ | 20% commission plus $2.95 on sub-$15 sales . price items or margins vanish |
Pick Mercari when
- Casual sellers clearing closets
- Secondhand bargain hunters
- Collectibles and hobby resellers
When Mercari is not a fit
- High-volume professional resellers
- Sellers needing responsive support
- Thin-margin items where 10% kills profit
Pick Poshmark when
- Casual closet cleanouts
- Fashion resellers building a following
- Mid-priced thrift flippers
- Buyers hunting secondhand brands
When Poshmark is not a fit
- High-volume resellers . the 20% cut eats margins
- Items under $15 . the flat fee bites hardest
- Anyone needing responsive dispute support
- Privacy-wary users avoiding breached platforms
Sources
- Mercari customer service reviews . Trustpilottrustpilot.comreview
- Is Mercari reliable? . Reddit r/Mercarireddit.comreview
review
- Mercari App Store ratings & reviewsapps.apple.comreview
- Mercari Review: Is Mercari Legit? . Crosslistcrosslist.comreview
- Mercari Fees Explained . Crosslistcrosslist.comnews
- Mercari Reviews and Ratings (2026) . Inquirerusa.inquirer.netnews
- CVE-2021-20835 . NVDnvd.nist.govsecurity
- CVE-2024-23388 . VulDBvuldb.comsecurity
- E-commerce giant suffers major data breach in Codecov incident . BleepingComputerbleepingcomputer.comsecurity
- Buyer Protection . Mercari Helpmercari.comofficial
- Is Mercari legit? . Avastavast.comnews
- Poshmark fee policy (official)support.poshmark.comofficial
- Poshmark newsroom: $2B seller payoutsnewsroom.poshmark.comofficial
- r/poshmark communityreddit.comreview
- Trustpilot reviewstrustpilot.comreview