It is not intended to hinder to purchase after market iPads iPhones and iPod touch devices and now new Macs with latest Os it is about security to protect those users whom have devices stolen. Buyer beware when buying through Craig list eBay or second hand in newspapers why because you donot know if the device you are buying is stolen or a genuine item that some one intends to sell. The rule of thumb is only buy from organisations where you have protection which I believe eBay is one of them. In other words what looks a great deal can be a disaster and at the end of the day it is not worth the hassle.