Thats exactly my point. So ... what to do ? I dont wanna pay them 20 bucks to get 50 cents back.
Is that even legal?
according to this ---->
https://ln.bitfinex.com/ They support the Lightning Network and you can withdraw using (LN-BTC). Use a wallet that supports the Lightning Network and withdraw your currencies. I think the minimum withdrawal limits are $5 equivalent, so all you need is to deposit $4.5 or ask one of the members to send it to your account.