The best thing about FTX (one of the reasons that i was using that exchange) was that it allowed free withdrawal of Bitcoins and all other cryptocurrencies. This was really helpful as sometimes you have to send small amounts of bitcoins and you do not need to pay any fees if you use the FTX exchange.
Yep, that was their tactic to get as much users as possible and we all know how that ended up so I am not sure I would use any new exchange in the future that has completely free withdrawals. You know what they say, "If something is free, you're the product". If anyone knows the exchange where the withdrawal is free or is lowest, please share.
Probably the best place to check withdrawal fee for every cryptocurrency/exchange is https://withdrawalfees.com/ (at least that's the site I use). 
