Need help - What should I ask for these rigs?

[kacka20]

I lost my job and need cash. So im selling off my computer collection... What should i ask for each rig on craigslist?
---------------------------------------------------------------

Everything in this system is around 1-2 months old...
case - Antec three hundred w/ 3 extra 120mm fans
Mobo - Asus M3A78 PRO
CPU - Phenom 9950 black
PSU - Corsair 650 watt
Video Card - eVGA 260 core 216
Memory - 8gb (4x2) OCZ Reaper DDR2 1066
Hard Drive - Western Digital caviar black 640gb
DVD burner - Samsung 22x dvd burner (sata)
Operating System - Vista Home Premium 64 bit

---------------------------------------------------------------

2-3 months old...
case - Antec 900
Mobo - Gigabyte GA-MA78GM-S2H
CPU - Phenom 2 940
PSU - Antec Basiq 500 watt
Video Card - ATI 4850 512mb
Memory - 8gb (4x2) OCZ Reaper DDR2 1066
Hard Drive - Western Digital caviar green 640gb x2 raid0
DVD burner - LG 22x dvd burner (sata)
Operating System - Vista Ultimate 64bit

---------------------------------------------------------------

2 months old... (bought this off a friend)
Dell xps 435mt
I7 920, 6gb tri-channel, Vista Ultimate 64bit
Other then that its a factory Dell

 

[Proximon]

Swap around the processors and then 1k and 750. As long as you make a point of the high quality parts. (everything is nice except the Antec Basiq)

The Dell I have no idea.

 

[megamanx00]

Yeah, I'm kinda with Proximon on that CPU swap. Anyway as for what you should charge first look at what other people in your area are getting away with. As for the Dell people may pay a little more for it just because it's a dell.

 

[knotknut]

ASUS M3A78 Pro $99.00
Antec Three Hundred $59.99
AMD Phenom II X4 940 $225.00
CORSAIR CMPSU-650TX $79.99
eVGA 260 core 216 $179.99
OCZ Reaper HPC 4GB x 2 $109.98
Vista Home Premium 64 bit $99.99
Western Digital caviar black 640gb $79.99
Samsung 22x dvd burner $24.99

Total $958.92

I dont think anyone will pay more for your used system than they could buy it for new.

Maybe $700.00 for this one.