How profitable those pools are? AntPool makes the transaction fee off of every block and so does BTC.com. BCMiner takes a 0.5% cut but pays fees, same with slush except 2% and BitMinter with 1%. Kano.is also pays the tx fees - 0.9%. Do they have benefits? Yes. If you own a large pool, you have a higher chance of winning orphan races (confirming your own block).
If your wondering how profitable the miners are, there isn't an answer to that since electricity fees vary.
Do these major pools earn A LOT of money ? What is the monthly range of benefits they have ? [0;$1000] ? [$1000;$5000] ? [$10000;$20000] ?
(I'm talking about mining pools owners, not miners)