Combo pack is polybagged with redemption code for digital download of the issue.
This issue is a variant of Batman (DC, 2011 series) #13 [Direct Sales].
There exist further variants:
Batman [Bruce Wayne]; Batgirl [Barbara Gordon]; Nightwing [Dick Grayson]; Red Robin [Tim Drake]; Robin [Damian Wayne]; Alfred Pennyworth; Commissioner James Gordon; Harvey Bullock; John Claridge (death); Mayor Sebastian Hady; Officer Daniels; Harley Quinn [Harleen Quinzel; also as Red Hood] (villain); Joker (villain)