Buy back price for this rig ?

Hello all,

I know that buybacks are posted in the bazaar section. but before even doing that, I wanted to know as to how much this system below would fetch me at the max. ? Its an Intel P4 - branded HP system.

Processor: Intel(R) Pentium(R) 4 CPU 2.40GHz
Mobo: Intel(R) 82865G series
Display on-board: Card name: Intel(R) 82865G Graphics Controller
RAM: 512 MB DDR1
Keyboard: Original HP
Mouse: Original HP
Monitor: HP 14'' CRT or Samsung 15" Syncmaster (if at all it fetches extra)
Case: Original HP metal cabinet with Compaq power supply + extra cooling fan (big) at the rear of the cabinet
HDD: <No, I'm not planning to sell it)

Best buck I can get for this ? It's a perfectly working one with one errors/faults whatsoever.

Also, what would be the rate for this AMD config ? (well, not a complete config as such)

CPU: AMD Athlon XP 2000+
Mobo: Asus A7N-266 VM/CSM
RAM: 512 MB DDR1

Additionally, if i sell my 17" Samsung CRT Syncmaster 753s.. how much can it fetch me?

Thanks for helping.. would need to decide on the budget for my new PC depending on the buyback rates !