Hard to say.... Try to play over the full 5ND cycle.
You will start losing money at start (investment period,) but you could come up ahead.

Here is data I found. make what you want out of it

- Nicehas (NH) has reports that average rental price for last 30 days was 0.0053 BTC per TH/s - WestHash
- You need to add 3% fee on top of that as that is how much NH scrapes of every order you place. That will put you at about 0.00545 BTC per TH/s
- Zach CKpool monitor says that if you were on Kano pool for a 30 days, you should made about  0.00585963 BTC per TH/s
- Delta in between these two should be a profit I guess

Maybe I am wrong in the statement above, but I am running 30 days project to test the theory.

Hope this helps.

ZemCoin
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That's interesting, Zem. We ran Slush's Pool for several months and were getting a consistent 30-day yield of 0.24-0.28 BTC with 2.9Th/s...or about .08 to .09 BTC per Th/s. Quite a difference from Zach's figure. Gonna have to watch this thing carefully, I guess. I'm only running 7 days of test here; if it doesn't at least meet our previous experience, and slightly better than the same stats for the same period as Slush, I'll have to move it back to Slush.

Onward.