(((Update))) we bought it / 1995 Lance squire lite 185

The owner isn't giving it away, but if everything works and it doesn't appear to be rotted out anywhere, $4k doesn't seem too bad.
Considering you're getting a Honda 2k and the tie downs and brackets.
Generator is worth $500 min and same for tiedowns, assuming they're Torklift, or truck model wouldn't matter.
Makes it more like $3k for the camper.
Do your due diligence and if it's the right one, have fun camping!