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 As for legitimacy, I've been using cex for a long time, and have particularly withdrawn money to cards about 20 times, everything was ok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 ?
Circle can be a convenient way to store some BTC and trade but their ToS prohibits accepting payments from certain services and they might close tour account if receiving or sending money to gambling services. That's not very convenient for a wallet.