Withdraw

• Players can gain income from selling cards in the Marketplace. They can also withdraw the balance to their wallet address through the "Withdraw" function.

• Customize the price, and sell cards at a buy-in price. PEFI or ETH can be chosen as the currency for sale.

• Withdrawal action will empty the current balance at once.

• Withdrawal is an on-chain operation, which requires a certain amount of ETH as the gas fee.