1) that would depend on the market you are selling in - i notice you have kenya
2) the demand for that type of machine
3) competition
so if you goto a local computer supplier in your area - what would they change and include for the specs above ?
8GB is of no value unless you are running x64 OS ...
in UK
the radion graphics card is £40
a desktop with
Intel® Core 2 Quad Q8200 processor
2.33GHz, 1333MHz FSB, 4MB Cache
Genuine Windows Vista® Home Premium
6GB DDR2 667MHz memory
640GB SATA hard drive (7200rpm)
and the above machine around £450
the DVD is it just a Read only or a writer - is it a blue ray device
so i guess 2nd hand around £200 to £300 for the base unit, with an official OS