help me here, lets see if someone can answer this.

if i have a exchange plataform and im receving bitcoins. so i will give a qr a code to a clean wallet to my user and after that wallwt are fill i transfer again to my main wallet right?

now things get trick.

if the transactions are costing about 6,25 usd (to the miners for transaction execution) and i charge 0,99% from every transaction. will be ok if the transaction for example im receiving 1 satoshi, this is 10000(usd)*0,0099-6,25(usd)*2 right? times 2 because i need to transfer from 1 wallet to another and i do so because i need to id the user that are puting what.

so this become impracticable if im receiving 1 usd. iwill take some loss.
some one sugest some blackmagic to solve this?