BTC.com is a pool run by Bitmain, creators of Antpool and Antminer ASICS. BTC.com charges a 1.5% fee and pays users through a PPS system. BTC.com shares the transaction fees with miners. Old Users Still Mine with 0 Fee PPS in 2017.
Payouts are stable, mining too. There are no serious problems, it works well, but the fees are still too big in my understanding. Maybe it's a fair price, I don't know