I tried to sell items on Catawiki, they charge the seller 20% plus VAT of not only the sales price but also the shipping costs, they refuse to let sellers put a reserve on even high end items if things from the same brand have previously sold for less than 200, so they expect you to sell really high end fashion, retailing for 5K or more without a reserve price. Then of course you have to wait until the buyer pays, ship and 2 weeks later (often more) Catawiki will pay you. As for the expertise of their "experts", forget about that. In all honesty, if you want to get rid of items, I wouldn't sell anything on Catawiki that I wouldn't happily donate to a charity. Catawiki also only allows sellers to charge 2 Euros for packaging, if you want to have good and secure packaging, you naturally pay more. It seems they are eager to rip off buyers and sellers alike.