I have a late 2013, maxed out rmbp 15". It is in the same shape it was in when it came out of the box. I am wondering how much it would be worth? I am considering buying the new macbook when it is released. I don't need all the power anymore although I get about 12 hours of battery life. I don't think I will notice any difference in speed as I mainly surf the Internet, run a single vm rarely and use Microsoft word. I love this computer but just wondering about the thoughts anyone else might have?