Comparison

Mercari vs Ebay

Mercari and Ebay both land on Depends.

Mercari

Depends

Confidence: Medium

Use it if you casually buy or sell secondhand items and accept a flat 10% fee plus imperfect support.

Depends

Confidence: Medium

Buy it as an individual selling used, rare, or collectible goods . reach is unmatched and startup cost is zero.

Mercari versus Ebay
Compare	Mercari	Ebay
Verdict	Depends	Depends
Best for	Casual sellers clearing closets	Casual sellers of used goods
Who it's not for	High-volume professional resellers	Low-margin, high-volume new-goods sellers
Privacy	Legitimate service overall, but two improper-authorization CVEs (CVSS 7.5) and a 2021 Codecov-linked data breach are on record.^⁸	Mature platform with real breach history: 145M users notified in 2014; recent CVEs mostly hit third-party integrations.
Support quality	Trustpilot and BBB report unhelpful support	Users hunt for real human support
Public sentiment	Users like the app's simplicity and authentication, but many complain about fee changes, support quality, and seller treatment.^⁴	Sellers complain about stacking fees and buyer-favoring disputes, while buyers praise reach and bargains but find support hard to reach.¹³
Biggest gotcha	New fee structure since January 2025 added buyer fees; some sellers say it's no longer worth cross-posting^³	Per-sale final value fees stack; cheap items can lose margin after fees and shipping