I see, the 3% thing is for hash power buyers. I've been reading their site, and I have a lead on an Avalon 741 to buy.
But in reading their site, I got to thinking. Instead of all the fuss of buying a miner, getting it running, and all that comes with it ( I used to GPU mine back in 2013-2014, so I know), maybe it would be more profitable to just be a buyer and buy hash power?
I guess it depends on the coin being mined, huh? Buying BTC hash power could be more or less profitable that other coins?
The obvious question to me is that if I pay (X) to have BTC mined for a period of time, why should Nicehash tell me I made (X+X) during my mining time and give me the full amount, minus ONLY their posted fee? If it were me in charge of that, there would be some serious skimming into my own personal wallet going on there!
As for who I am buying hash power from, or where on the planet the miners are, I don't think that really matters. As long as I get more BTC in profits than I spent buying the hash power, all is good.
EDIT -- I was just on the NiceHash site, and it said that to mine BTC, the minimum purchase costs 0.0106 BTC for 24 hours of 0.05 petahash (50 terahash) of mining power for me.
And on the bitcoin wisdom site
https://bitcoinwisdom.com/bitcoin/difficulty It says that 1 day of 50 Thash earns me 0.0086 BTC.
So I pay 0.0106 and get 0.0086. That is LESS BTC. And that is before any fees, assuming the calculator is right.
So if that is accurate, then why would anyone who can math be a buyer?
And what happened with the difficulty recalculation this cycle? They really overshot it and highsided the difficulty bounce.