With Snow Leopard and the AppStore on the Mac, the prerequisite for further updates, such as coming to Mountain Lion is. Perhaps to the dismay of some sellers who want to do with this update big win, I have to point out the following. The operating system can be - instead of here for over 100 - order from the Apple Store Hotline for 24 in the Family Pack. The single license is again some euros cheaper. I hope that this is for one or the other a valuable clue.