Catawiki is nothing more than an expensive glorified Craigslist-like website trying to pass itself of as actual auctioneers, not safe at all. After years of trying my best to enjoy Catawiki, I have given up, it's been a few good experiences but mostly it has been aggravating; I've bought things and I have sold things on Catawiki. They have incredibly bad customer service, if it's a positive experience, it's sheer luck. Each and every so called 'auctioneer / expert' is someone that works from home and either does so for the easy money or to feel superior in my experience, all I've dealt with has either been obnoxiously superior (sometimes downright rude) in their attitude or showed a complete lack of knowledge. Repeated reports from me when I noticed that certain items sold on Catawiki were counterfeit got no response and they got sold nonetheless. Most questions I had for them where I got a response were answered it seemed by a robot, or better put: standard answers which simply didnt help me because they only touched on the subject. When a bidder decides not to pay, you get no compensation, just the trouble of having to put it up again, in certain cases those very same items are rejected because a new 'auctioneer/expert' has taken reigns of a certain category and feels it's not good enough or whatever, no discussion is possible. eBay for example is your best bet, it's cheaper too, and much safer, Catawiki does a lot to make you FEEL it's a safe selling environment, it really isn't any safer and I would go so far as to say it is less safe than most similar websites. My advise: steer clear of Catawiki, it's really not well organised and a lot can go wrong (and does).