Hey Guys, is there ANY WAY to check what OSX is on a Brand New MacBook Pro Retina by looking at the sticker on the box? I went to a store in my area ( MicroCenter ) and they were selling NEW MBPr 13 in the box for 100 less than apple and they said it had Mavericks install .. That's what I wanted, got home with it and Yosemite was installed, but really wanted Mavericks.. So the I wanted to know is there a way the sticker on the box has any hints of the OSX with out opening them? Thanks!