Idleminer uses pools with VERY LOW fees!

IdleMiner currenty uses NanoPool as a main pool. NanoPool fee is only 1% and miners pay a fixed transaction fee which is 0.015 XMR. Nanopool minimum payout is 1 XMR but you can change it after some mining to 0.3 XMR.

If you want afterwards to exchange your XMR (Monero) to Bitcoin (you must use crypto to crypto exchange (like Poloniex or Bitfinex), fees will be lower than if you use Nicehash miner or many similiar miners.