Hey all, I'm wanting to buy a 15" rMBP I found on eBay. However, it's the Mid-2012 model and is out of warranty and they never bought AppleCare for it. Is using a portable machine without AppleCare a bad idea? I thought AppleCare was never going to be used on my iMac until the hard drive needed replacing three times and I've called them dozens of times for phone support. But does the rMBP even have that high of a rate of "failure?"