I dont think that there will be any withdrawal fee,and thats one of the Dealjoy advantages.
so what is the main business model for them to earn money for maintenance and such?
This is what i found in their whitepaper about bussiness model
Dealjoy will keep a maximum of 20% of the income received from affiliate partners to pay for the general business and platform costs and to follow the long-term marketing, development and token burn strategies. The rest—a minimum of 80% of the acquired cashback funds—will be paid out to our members per their eligible purchases. As member payouts are carried out in DEAL tokens, Dealjoy will continuously purchase tokens from external exchanges.
Affiliate partners pay commissions within a month from the commission-entitled purchase. To ensure continuous token reserve and liquidity for instant cashbacks, 10% of the total initial DEAL token supply is allocated in the company reserve.
It is a fair and well thought structure.Making sure that Dealjoy has a stability when it comes to price.