We're priced slightly below the expected returns during the beta period to encourage users to test/break the site.  Nicehash is paying .0217btc per TH/day right now, so you could theoretically make a small profit there, or your pool could get lucky and you could see great returns for the day. The best value of course is on a 6 month lease.

Or maybe you have some bitcoin you don't like (for whatever reason) and want to get some new fresh mined bitcoin in return. What better way than to mine some in the cloud?