How much is my G4 tower worth?

[Moz]

Just wondering if there are any hard-core Mac dudes out there that may know how much my G4 tower is worth. I want to sell it on eBay, and am wondering what to put the reserve at. The specs are below, and THANKS for any advice on price!

G4 450 tower, AGP grapics
Single Processor
1.38 gb RAM
2 internal HD: 1 60, 1 20
Apple Pro keyboard
Hocky-Puck mouse (sorry)
OS 9.2 and OS 10.3 Panther
Zip, CD, DVD reader only
External QPS 8x CD writer

Additionally:
Apple 21" graphite Studio Display monitor

[SilentPanda]

I was just shown this site so I'll pass it along.

http://www.everymac.com

[Santiago]

I wouldn't trust the prices on that site at all. The Beige G3s they claim are worth about $500 were going for $150 on eBay back in February...