Greenmangaming

I absolutely love this site. Why is it so cheap though? When it has sales it has them at, so far that I've noticed, the same prices as a sale price on steam. Not only that, they always have a 20%-25% voucher running at the same time making it cheaper than steam. How can they make profit from this? Little, if any i presume. Steam have trading cards which they make a shit load of money from so they can afford to make a game cheaper. Plus, GMG has GMG credit which can be obtained simply from earning achievements. Granted, this doesn't stack with vouchers.

Also, anybody feel that they force the vouchers on you? I'm not complaining but i get regular emails of their new voucher expiring in a few days to get a another email of their new voucher expiring...ect you get the idea. They always have vouchers.