Vinted processed €10.8bn in traded goods in 2025, up 47% year-on-year, generating €1.1bn in revenue and a €62m profit. Those are exceptional growth numbers for a secondhand marketplace. But the article documents a structural pattern: when disputes arise, sellers consistently report that the platform sides with buyers, confiscates goods and funds, and offers no transparent appeals process — even when sellers provide timestamped video evidence, purchase receipts, and bank statements. The cases follow a template. Catherine Warrilow sold a £6 necklace, provided Ring doorbell footage proving she posted it, and was still ruled against. Maggie sold authenticated Birkenstock clogs for £72, provided an Office receipt, and had her account permanently banned for 'counterfeit' goods the buyer kept. Victoria Chamberlain-Ralphs, who runs a resale business with 700 clients and 18,000 items, has been banned approximately 12 times in three years — once for 'fraudulent activity' that Vinted reversed five hours later, calling it 'a false alarm,' but not before 42 outstanding orders were cancelled. Warrilow's independent survey at Sad Vinted Faces has now collected more than 6,400 dispute cases. Consumer expert Martyn James says he has been 'flooded' with messages from users accused of selling counterfeit goods who then had accounts and funds frozen. The pattern is consistent enough to suggest a systemic issue rather than isolated bad luck. Vinted claims all appeals are handled by human reviewers, but the seller accounts describe interactions indistinguishable from automated responses — formulaic language ('based on our evidence,' 'our evidence suggests'), refusal to specify what evidence was considered, and no mechanism for independent review. The platform's statement that '98% of transactions are completed smoothly' means that at €10.8bn in volume, roughly 2% — potentially representing hundreds of millions of euros in disputed transactions — are not smooth, and those are governed by a process sellers describe as opaque and one-sided. The extraction dynamic is clear: Vinted earns revenue on every transaction. When disputes arise, the cheapest resolution for the platform is to refund the buyer (preserving buyer trust and retention) while absorbing the loss from the seller's side. Sellers have no countervailing power — no union, no ombudsman, no regulator with specific jurisdiction over marketplace dispute resolution. The platform acts as marketplace, payments processor, and adjudicator simultaneously, with financial incentives that consistently favor one side of every dispute. James raises the core governance question: what happens when a platform's automated systems make allegations — including fraud and counterfeiting, which carry legal connotations — against users, and there is no route for independent review? This is not a customer service problem. It is a due process vacuum in a marketplace that now handles nearly €11bn in annual trade across 26 countries. The 6,400 cases collected by one individual's survey suggest the actual scale of the problem is far larger. Vinted's response — 'clear rules to protect the community' and 'action is taken when rules are breached' — presumes its own determination of breach is correct. That is exactly the circularity sellers are contesting.