Knowing that version 2 of the rMBP is due to be released in June 2013, my plan is to buy that one for the performance enhancement. My current rMBP is great, but the performance could certainly be smoother. I have the 512GB drive, 16GB RAM, 2.7ghz model. What do you think I could get for it, considering it will be a year-old model? 50% of the original price? 70%? I'm not familiar with Apple resale prices, but I'm guessing I'd be able to sell it and get some cash back, yes?