Around the greater Washington, DC, the scrap value for that truck (Cab and chassis) is approximately $600.
For what it's worth, recently a nearly non runner in original condition with serviceable paint, and halfway decent sheet metal (but a shot floorboard and no brakes) (an Advance Design 2-ton) sold for $3,000. What you're describing sounds a little rougher, but still restoreable. Non-restoreable would be worth scrap value. So add a bed, a running motor ... Finding better trucks than that is getting harder all the time here on the East Coast, and especially in the Rust Belt. $1,000 doesn't seem that outrageous to me.
Regards,
John
