Green Man Gaming offers downloads of Batman Arkham City: Game of the Year Edition for Windows
for $7.49. Coupon code "GMG20-PJFEW-Y16HK" cuts it to $6
. That's the lowest price we could find by $24; however, we saw it for a buck less in December. It includes the base game and all DLC. Coupon expires January 28 at 11 am ET.
Note: It requires activation on Steam.