Newbie faucet owner question

[sunchaser]

Hello I have a question for some Faucet Lords, sorry if it is stupid but I am trying to understand if a faucet can be sustainable even without Google ADS.
I give out on my faucet, gain-bitcoins.com, 150 satoshi every 5 minutes.

Now if i use fo example a CPM Ad network that pays for 1 unique impression 200 satoshi, and a member comes 200 times a day on my site with the same IP
and solves 200 captchas, it will cost me 200*150 satoshi and i will get 200 satoshi from the ad networks, right?

If I understood well then it would be better to give a bit more satoshi but less frequently?

Thank you.

[hoop]

 Its very hard without Adsense!

[sunchaser]

Yes I know, as always I get on the train late. But I would like to know how ad network pays for cpm so I can do some math.