I have a mid 2010 macbook pro 15 inch that I bought new from the Apple store online in June 2010. It has an anti-glare screen, and Snowleopard 10.6.8, it has a 500 GB hard drive ,4gb of RAM, & i7 processor at 2.66. It has HDMI, Firewire & USB 2.0 ports. It also has Parallels desktop installed with windows 7 pro & windows xp pro It also has apple care I am thinking about the cost of doing some upgrades to it like a SSD drive, & more RAM, & new battery (the battery is dead) Also, I have never opened up a laptop's innards & operated on it, so this would be new territory for me, & I would be afraid of damaging something. vs selling it on ebay & getting a newer mac laptop with a SSD drive & more updated ports like USB 3.0 & thunderbolt what would be the more economical thing to do? if I sold it on ebay, what would be a good asking price? should I do an auction? or just a buy it now? I know my laptop is a bit older now, but I thought macs kept some of their value better than other brand computers. It cost me quite a bit, because it has been my main computer, portable & desktop, (hooked via HDMI to an Apple cinema display), but I have since gotten a mac mini, so it is now my portable only and backup computer should something go wrong with my mini.