Here's how I figure it price wise -
$70 1-Ghz Athlon (+motherboard)
$30 512 megs 100-mhz SDRAM
$25 20 gig 7200 RPM hard drive
$60 Geforce 3 TI200 video card
$30 Sound Blaster Live X-Gamer
$40 12X12X32 cd burner
$10 40X cd player
$10 3com ethernet card
$30 4.1 digital surround sound system
$50 Windows XP (upgraded legal cd)
$25 Quicken and Works Suite
Hmmmm...... I did some figuring here, getting some prices from Ebay and this is what I figure, which total $380. Maybe I couldn't get $500, but then again, I guess that it all depends on who's buying it

I didn't take the highest prices though, I put in the average/lower prices, so who knows. I guess that i won't know how much I can get until I try.