We have all played through Gears of War single player and least twice, I mean the first time took like 5 hours. And we probably stumbled upon some cogs that serve absolutely no purpose to the games outcome.  Besides an achievement and some self satisfaction, thats about it.  It didn’t take a rocket scientist to find out that whenever you see a red GoW skull, a cog is probably near by.  Sometimes, they are hidden like in a couch or something you need to chainsaw.  So just in case you want all 30 cogs, and have money you want to set on fire, you can BUY all 5 acts for 1.50 a piece reports our good friends at joystiq. What the f&%k?  Is Cliffy B. serious?  This guy can probably buy and sell professional athletes and he is going to charge for some meaningless easter egg BS?  Just in case you are wondering, MajorNelson has the entire breakdown of the pricing and so forth.   If you are really desperate, a google search or Youtube is entirely free.