Hi, I have Apple MacBook Pro MD103LL/A 15.4-Inch Laptop (OLD VERSION), mid 2012. It has AppleCare until 02/2016. It is in excellent working condition and looks very new, no scratches or marks. I need to buy iMac for my development requirements, so need to sell this laptop. What can be it's price? Is there any place where I can trade-in for iMac? There are so many ads on Amazon, craigslist, I don't know how to get buyers' attention without losing too much. Thanks for your response.