I do most of the trading on CEX. Withdrawal fee of $3.8 (or 3.5 for eur) seems genuine considering the amounts I withdraw and more over other exchanges charge 3-5%. Of course, if you are withdrawing $20 it seems much but it is better than other exchanges. As for legitimacy, I've been using cex for a long time, and have particularly withdrawn money to cards about 20 times, everything was ok
I'm withdrawing about 200eur per week. Reason I ask this is because I stumbled on Circle or some other exchange with 0 withdraw fee. Anyway how much are you withdrawing with Cex ? Anyone had any large amount of money on their exchange ?