0% fee on deposit makes sense but 0% fee on withdrawal looks very good for users but is it good for your company?
I should clarify that 0% fee means we do not charge extra for users to make withdrawals, this does not mean transaction fees are waived.The only fees I ever paid was the network fees. Sometimes it was a lump sum, which I really didn't like because mostly the player overpaid but recently often enough sites use tome kind of a dynamic fee which adjusts to current network fees. I think it's the best way for players because they can be sure not to be overcharged and it's also good for the sites since they are not in danger to lose money on fees.
Fees paid are dynamic so you will not get overcharged. 
In my time using gambling sites I have actually never encountered any site that would charge a fee to deposit (first of all) or withdraw. The only fees I ever paid was the network fees. Sometimes it was a lump sum, which I really didn't like because mostly the player overpaid but recently often enough sites use tome kind of a dynamic fee which adjusts to current network fees. I think it's the best way for players because they can be sure not to be overcharged and it's also good for the sites since they are not in danger to lose money on fees. 
