I picked up my 95 GMC 2500 conversion van for $4200 4 or 5 years ago. It works fine pulling my open trailer. I just fold down the bed when hauling large boards/etc for home projects, or use the trailer for really big stuff.

Mileage sucks at 8-10 towing and 12-14 otherwise, but I only do about 1 oilchange of miles each year.

Having said that I am looking seriously at used diesel or v10 excursions and superdutys. They are not that expensive these days, and have a lot more capability.