How much do you reckon its worth?

Hi! I've just sorted a new rig, I'm wondering what you guys reckon its worth (considering selling it), its totally brand new, everything has its original gurantees etc, its go XP on it and it runs like a greased weasel.

Specification:
Case: Gigabyte 3D Aurora, 2 x 120mm Fans in the rear, 1 x 120mm Fan infront, LArge Dust-Proof mesh at side to aid cooling.
Power Supply: Hiper Type-R 580W (630W Peak) Modular
Motherboard: Asus A8N-SLi Deluxe (Socket 939)
Processor: AMD Athlon 3700+ San Diego (1mb L2 Cache)
- Temp:
Idle: 30C
Load: 39C
This case is super cool!
Memory: 1GB (2x512mb) Corsair XMS TwinX RAM
Graphics Card: Leadtek 6600GT 128MB PCI-Express Lightly Overclocked (10% Core and 10% Memory)
Storage: 2 x Hitachi Deskstar 80GB SATA-II in Raid0
DVD: LiteON Dual-Layer DVD+-RW
Floppy: Sony Black OEM
Monitor: 17" CRT Samtron thing (Soon to be replaced hopefully!)

Peripherals:
Mouse: Logitech G5 Laser Mouse (Up to 2000DPI!!!!)
Keyboard: zBoard + Limited Edition BF2 Keyset
Headset: Speed Link Medusa 5.1 Surround sound headset (Utterly awesome!!!)
Joystick: Logitech Freedom Cordless 2.4GHz

Okay here are the benchmarks!!!!:
3D Mark 2001SE: 20,099
3D Mark 2003: 9,087
3D Mark 2005: 4,000

I've used BF2 on it and it runs superbly with everything on medium and the important things on high.

Thanks!

Any thoughts? Anyone?