No. The platform merely provides the marketplace and does not check the individual auctions; the contract of sale is concluded exclusively between seller and buyer. Intervention takes place only in the case of obvious breaches of the terms of use, or where a final court judgment exists, in which case the seller can be excluded from trading. In practice this happens rarely enough, for even clearly non-compliant listings, such as the sale of copies, are frequently not ended early.
From this a structural imbalance arises: the seller is usually in the better position, because the buyer pays in advance without ever having seen the goods. Fraudsters can often no longer be traced after the event, proceedings are discontinued, and not every seller can be got at through bank details and user data either. For sums of around 300 euros, instructing a solicitor is as a rule not worthwhile for the buyer, which is why many of those affected let the matter rest.