I don't know if you've made the purchase or not, but last December I bought a 2007 L3940, FEL, 4wd, R4 tires, and about the same hours as the one you are looking at for $17,700 + tax. It didn't have a backhoe attachment.
The tractor is great and you'll really enjoy it if you buy it.
Little late to the party here but I bought a 2007 L3940 HST+ with cab, Woods Loader, Bobcat Utility Grapple, And big heavy duty box blade for $25k. Tractor had 600 hours on it.