Are you looking for just something that would be an update and handle all basic day-to-day type stuff or?
I ask because the price on computer power has gotten stupidly cheap. I use to run a small computer company and still build the occasional PC for family/close friends....Slapped together a machine that is easily overpowered for day-to-day stuff, but still ran only $500ish.
Other reason I am asking, is I have some "older" computers sitting around and not being used. So it depends greatly on what you are looking for ๐