MadalinStroe: Strangely enough, right now, the "Pay for your order" button is disabled for me too, BUT ONLY if I try to buy a gift.
If I try to buy a game I don't already own the button is enabled.
This behavior, is clearly something cause, intentional or not, by GOG.
Probably not the case but just in case... remember that it will stay disabled when buying a gift until you put in a valid email address.
ADDED: Oh and to the question in the title... yeah, sometimes I when I'm broke. :P
Wolf3: I'm trying to buy 4 games, and the green "Pay for your order now" button remains unclickable. I normally use Paypal, but any option I click, it remains unclickable. I've tried it in Firefox and Chrome now...
Is it a problem with the site, or with Paypal, or...?
Make sure you don't already own one of the games as if you do it must be a gift purchase and when making a gift purchase it won't let you pay for your game until a valid gift recipient email is put in.
I know this is probably not the issue here but just wanted to point it out in the one in a million shot it was. Don't mean to be patronizing.