The machine is guaranteed 100% working. Cosmetically I would give it an 8.5/10. No major scratches on the screen. The only flaw is on the left side where the screen attaches to the body, a small piece chipped off (although it is not visible unless the screen is tilted back as far as it can go). Otherwise everything works fine.

Specs:

Intel(R) Core(TM) i5-2430M @ 2.4 GHz
4GB Ram
640GB hard drive
13.3" screen
NVIDIA GeForce GT520M graphics card
8 hour battery life
Weighs roughly 3.7 pounds

The computer has Windows 7 home premium installed on it. I can also install Microsoft Windows 2007 on it if you want.