Help me price pc

I'm selling my old pc on craigslist to afford a better one. Can someone help me price it though, here are the specs.

CPU: Intel Core 2 Duo E7500 @2.93GHz

Memory: 3Gb DDR2

Case: Generic HP pavilion case

Motherboard:ASUS P5QL-VM/CSM LA 775 Intel B43 Micro ATX Intel Motherboard

Graphics: Intel B43 Express Chipset

Harddrive: 148GB (dont know the brand)

PSU: Liteon 300w

O/S: Windows 7 Ultimate

How much could i sell it for?

I would pretty much take any offer, if anyone has a interest in such a machine.

I have sold and seen LOTS of computers on craigslist and based on those specs $250 is around the average for something like that , espically considering amd's refurished counterpart sell for around $325-350 at retail stores