Hey guys. I'm not sure how the application of applecare works because I usually buy my macs bundled with them from apple online store except this one. I decided to purchase an applecare for my nMP maybe in a few months time (short of cash). I went to Amazon.com and saw this http://www.amazon.com/AppleCare-Pro...LTNK/ref=aag_m_pw_dp?ie=UTF8&m=A2MX23EIBI0MV3 I'm really vague about it and would appreciate if you could shed me some light whether why is this cheaper than what Apple sells and also how it is that it says it is used from $150 ? thanks!