I have an HP Pavilion a620n desktop PC that I am considering selling to my friend. The PC has been upgraded with an additional 512 MB of RAM,a floppy drive,an Nvidia GeForce FX 5200 video card,and a Soundblaster 5.1 surround sound card(not sure of the exact model). Everything thing else on the desktop is pretty much much what came from the factory. I am also selling the PC with an Acer AL1951 19" LCD monitor,a Logitech 5.1 surround sound system,a Logitech wireless mouse and model Y-RK56 wireless keyboard,and a Sony dual DVD-RW external drive(model number DRX-820U). Keep in mind all the items previously mentioned,including the PC,are in excellent condition. I was thinking somewhere in the neighborhood of $500 for everything but what would be the most I could expect to get for everything?