Reviewers are overwhelmingly negative about Catawiki, describing a platform with weak customer support, poor dispute handling, and little transparency. Buyers repeatedly report counterfeit or misdescribed items, lost shipments, refund refusals, and disputes closed without clear evidence or follow-up. Sellers complain about unpaid bids, automatic relisting, delayed payouts, account bans, and what they see as favoritism or inconsistent decisions by “experts.” Across both sides, the common theme is distrust: users say Catawiki often protects process or sellers over fairness, accountability, and clear communication.