I have a Creative Cloud membership for Photography. I have it activated in one laptop (for travel) and in my desktop. I just bought another desktop mac computer and would like to activate all three computers. It only allows two of them. What can I do to activate all three of them and how much it would cost me?
All you need to do is sign out of your account on either of the two computers to be able to sign in on the third
Remove Cloud license on a computer http://forums.adobe.com/thread/1442423?tstart=0 may help
You cannot activate three computers at the same time.
But you can toggle 2 activations between 3 computers by activating and deactivating as required.
If you need to have 3 activated at all times then you'll have to create a new Adobe ID and take out another subscription. That'll give you 4 activations - 2 per plan.