Sellers beware. Catawiki is run by the auctioneers, some are good, others very poor & not fit to call themselves auctioneers. Disagree with their comment, you get banned and ALL OF YOUR MONEY HELD WITHOUT ANY RIGHT OF REPLY FOR AS LONG AS THEY SEE FIT.
After 5 years and tens of thousands of euros in fees I was banned for asking an auctioneer why he had denied my listing but allowed 4/5 others the same. I've attempted to file a complaint but there is no recourse for wronged sellers.
I am now going to seek legal action following my funds being held illegally for over 2 months.
You've been warned! Sell elsewhere.