Replying to In your opinion, worth of this PC?

I am buying a custom rig from a friend, and I want to see what NS thinks I should pay for it. These are the specs:
-GS 800 Corsair PSU
-AMD-8350 CPU
-GTX 660 NVIDIA GPU
-1tb hard drive (DOnt have specifics yet on model)
-asus M5 A99FX Pro R2.0 Motherboard
-8gb ram (Will update later with specifics when he gets it to me)
-thermaltake case
-lg disk drive
-cyborg gaming keyboard
-razr naga mouse

It is a year old also.