I'll likely be buying an RV out-of-state. In the antique vehicle market, there are independent inspectors who will go look at the vehicle and send me a condition report. Then I know whether or not I ...
I cheated. That guy participates on another forum that I belong to. :)
Maybe check with some of campgrounds near where you're ordering from. I'm betting most mobile RV techs would be willing to do it for a price. The campgrounds could recommend techs that they know of and use.