I looked it up on a bunch of different sites but get crazy different answers. Wife got it for me for Christmas of 2011 so it's a late 2011. Unibody, quad core i7 2.4, 4g ram, 750hd. Got all the chargers, box, instructions. I use it about once every 2 months so it's seriously in pristine condition. I just never could get into the OS so I don't use it. It's just sitting here. Thought I'd use the dough to get some AR goodies (my current hobby). I don't want to rape anybody but I don't want to get shafted either. What's a fair price to ask?