Gamestop has begun to, again, offer it's sweet annual 50% Bonus Trade-In deal.

Once a year Gamestop runs a sweet trade-in bonus that nets you an additional 50% credit. So $30 becomes $45 to use for in-store credit. So now is the time to off-load any unused games that may be sitting around.

Additionally you may find the clerks failed math and double your credits instead of giving you half.

I would also assume that your Gamer Card's additional 10% trade-in bonus is also stackable, as with previous years.