Also can you confirm a few details? I can't seem to find any info on the site regarding fees, like maintenance and power. Are those automatically deducted from the rewards that you receive every 10 minutes? Secondly, will the hashes I purchase expire or are they 'lifetime' contracts? Thanks for your help.
All the maintenance fees are deducted before your rewards every 10 minutes.
As redomanit said, there is also withdrawl fees : 0.001 BTC.
For information, since I've signed up, the remuneration is about 18-18.5 satoshis/KHS/day. Which means
actually (KHS market ~ 1200 sat/KHS) a BEI around 66 days. (Be aware this can change!)