Before you can start trading on Bisq, you’ll need a little bitcoin for a security deposit and fees (0.01 BTC should be enough). Each trader must lock bitcoin in a multisignature escrow until the trade is complete—this is part of what makes trading on Bisq highly secure.
I would not pay for that. (Expensive)
It’s better to use TradeOgre even though I can only buy and sell in small number. For information I have filled out the application form for TradeOgre to list USDT