FEELER: PM G5 1.8 upgraded

[G5Unit]

Just wondering how much my PM would go for incase I would want to upgrade to a Mac Pro:

-PowerMac G5 Single 1.8Ghz (Late 2004 model)
-Super Drive 8X
-1.25gb ram
-80 gb HD
-300 gb HD
-X800XT 256mb Graphics Card
-Airport Extreme
-Mighty Mouse and Wired Keyboard
-iLife 06
-Tiger


Just need a price really.