My MBP is coming up to the 1 year mark in September and I am wondering abut getting the Apple care for an additional two years. What's the cheapest way to buy it at his time? I am able to buy it either in the US or the UK and can qualify as a teacher for educational pricing. I spend time in both countries but moreso in the UK. Is buying it from an individual or a place like ebay safe to do? Thanks for any advice.