How much is my X61 worth?

[spasticteapot]

I have an X61 with the following specs:

-2ghz Core 2 Duo T7300

-2GB DDR2 (speed unknown; stock from factory)

-80GB Hitachi HTS54168 5400rpm hard drive

-Base-model XGA LCD

-Intel PRO/wireless 4965AGN wifi cardcard

-4-cell battery

-Windows Vista

-2 1/4 years of accidental damage protection deluxe-style warranty. (The hideously overpriced one.)

Not many laptops on eBay have said warranty, so I figured it would be best to ask. Laptop works 100%, though Linux driver problems drive me up the walls. (Of course, this is because I insist on Ubuntu.)