We could have had fees when we started, but we decided to incorporate the costs into the purchase price instead. This not only simplifies it for the customer but also doesn't surprise them down the road.
As for the question "How do they do this?"... well our business model is simply awesome that's how. ...
I love you and have some TH/s with you at http://pbmining.com/ but hope that you will propose always THE BEST price. Now it is X proposing 0.0028 BTC / GH/s !
Please dont threadcrap and advertise.
I would like to stay with PBMining ! They are so adaptive !