This depends on the selected payment method. Usually, transactions from e-wallets to e-wallets (if within the same network) are free but the casino can charge a small fee for processing cashouts. In terms of cards, a bank will add a few of up to 2.5% to both deposits and withdrawals. Although, the merchant is usually the one to pay the deposit fee, but this is not the general rule. As for bank transfers, these are usually the priciest way to claim cash, and commissions of up to 50 EUR may apply.