Oh, I think I didn't explained myself quite well...
I was talking about the miner fees. I want to decrease the miner txfee in order to remove the withdraw fee from the site

The minimum withdraw value is now 0.002 BTC, a tax of 0.0005 BTC is 25% of that value. I was thinking to pay only 0.0002 BTC txfee for a 0.002 BTC transaction. Of course the upper txfee limit will be 0.0005 BTC
