I wouldn't pay $350 for it if it were for my own use, much less to resell. Maybe something in the $150-$200 range. The 955 CPU seels new at about $20 more than your asking price for the used one. MB can be had new for about $15 to $30 more. You need to check your prices vs new prices. A decent 500W PSU can be had new for very close to $50 if you catch Newegg on the right day. Computers, like cars will lose nearly half their value once driven off the lot. An old saying but many of those parts appear to be about 2 years old.