$2599 for 1TH/s for a year. Did I read that correctly? That price is surprisingly competitive. I'm not one for cloud hashing, and in fact have steered others away from it in general; however, this price is basically the same as purchasing your own hardware. You don't have to deal with the electricity/maintenance, either.
The only problem with that is you'll never ROI in BTC or fiat at $2599 for 1 TH/s.
Any miner (hardware or cloud based), has to be less than $2/GH to be able to have a chance at ROI.
Anything more, you're just throwing away BTC.