Back in '07 and '08, I bought Applecare from eBay for my Mac Pro and Macbook. Didn't have any issues registering them. Now, I just ordered Applecare for my 2010 Mac Pro and 27" ACD. Got the Mac Pro from the refurb store and the ACD from the Apple store (bought at separate times so I needed Applecare for both). When I went to register Applecare, both times Apple needed proof of purchase for both the Mac and the Applecare. It was easy to submit the receipt to them, however, they clearly state in the email you get: It seems that Apple is cracking down on making sure people are buying Applecare from a "Authorized Reseller". Thankfully, I ordered mine from J&R online for the Mac Pro and LA Computer Company for the ACD. I'm still waiting for the ACD to go through, but don't think it'll be an issue. This is just a heads up for people.....beware buying Applecare in an auction. You could be wasting money if Apple doesn't accept it. -Kevin PS. As a side note, this was my first time ordering Applecare from LA Computer Company (http://www.lacomputercompany.com/). I know there are a lot of threads on whether they are legit or not. I can say, not only did a get a great deal on the ACD Applecare ($40 compared to Apple's $99), but they shipped fast and everything was boxed perfectly.