Found a dually, what's it worth?

[Huskerboy2]

Guys:

I found a guy who has a '71 Chevy dually that he is willing to sell. It used to be a tow truck, but the tow bed has been removed. It's just a cab and chassis now with a rebuilt 350 that runs good. It's in pretty decent shape overall. Not much for options. It could use rockers, but that's about it. Just a good old work truck. I'd like to put a dump bed on it. I've been looking for a dually for awhile and haven't really found anything. The guy wanted too much for it. I've been trying to buy it for awhile. He's down to $1800. Too much still? That seems a little high to me, but these old duallies are hard to come by. What do you all think?

Thanks.