I am selling a 2008 13" White Macbook. I have had it for a couple years now, and it is still just as fast as the day I got it. I have been upgrading it slowly over the years, and I have everything maxed out other than the hard drive (which really hasn't been much of an issue for me).
This Macbook has a 2.1 GHz Duo Core Processor, 4 gigs of ram, and a 120 gig hard drive. I have recently done a clean install of OSX Lion 10.7.5, so it is almost like it is brand new. The only things I have put on there are Microsoft Office 2008, Logic Pro, and Final Cut Pro 7 and some of its many add ons.
I have recorded and mixed countless songs, edited some videos, used Photoshop and Illustrator on this Macbook, and never once have I had an issue. This has been an extremely reliable computer, but at this point, I simply do not use it anymore. I cannot justify keeping it. I have also had the keyboard bezel replaced recently, and the battery is fairly new, it usually lasts 4-5 hours. I will also include the little remote seen in the picture.