The payout when you upgrade is based on your Account Balance. The account balance does increase when you click on ads. But if the account balance is large enough, you can be paid even when you have stopped clicking ads.
Your upgrade lasts for 200 clicks OR for 30 days -- whichever way you choose. Hope this helps!
I got $1.51 today on my copper upgrade. Yes, I clicked ads.
Regards from RosieS