I was searching around for a used MacBook pro, and I found one used for $599. but is it worth the price? and can I get an apple care protection plan if I do decide to purchase it from, say, amazon? I just wanted to be sure before I make an investment. I herd of the newer models, but I'm not a fan of retina displays, I just want one without a retina display. hopefully apple will still support the 2011 model onword. thoughts?