it all depends who your going to sell it to, if it's someone that is an expert then they will probably buy it for like $250 and for someone that has no idea what a processor is you could sell it to them for like $300-$450
I think you can defintatly sell it for more than 250$. If you go to micro center or somthing, theres crappier computers for more than 250$. Id say 450$.