My '05 crew cab Dually with D/A and 4wd only cost about $36,000 new. If that's an LT they're crazy. I'd guess you could by a truck 5 years newer for that kind of money.
My '05 has been a great truck. Probably the most trouble free vehicle I've ever owned and I don't really have much trouble with any of them. Mine has 214,000 miles on it. Just about all of them were hauling and/or towing something; sometimes off road.