I don't really see the point in spending close to $40 for macros, especially when there's complaints both here and on the WoW official forums about macros not working right anyway. And charging for addons has been against WoW's ToU for some time, so I'd say you're just looking at a scam, since there's nothing legit about macros and keybinding that you can't find for free all over the place.

http://us.battle.net/wow/en/forum/topic/3657444235
http://us.battle.net/wow/en/forum/topic/6308621096
http://us.battle.net/wow/en/forum/topic/3424687724