Are you sure you are explaining it correctly? When someone sends a deposit, they pay the fee. So if I send you 50 dollars, I should get 50 dollars. The fee is already paid by me when I send the money. If I am only credited 30 dollars, then you are taking 20 from me and anyone else who depsoits.
If this is correct, I advise everyone to stay away.
I have explained it very clearly.
I recommend everyone to deposit at least 50USDT then if you pay fees, your balance will be 50 $.
50USDT here means including the transfer fee your exchange will deduct in it.
For example, when I place an order in binance and deposit 100USDT into my wallet casino (ERC20 Network), binance will subtract 20 $ from the total amount of 100 $ and my casino balance will be 80 $.