Buying travel trailer by phone w/o visiting dealership?

Last year I negotiated the purchase price of my current 5th wheel and the trade in price of my travel trailer via email but both the dealer and I understood that nothing was binding until I signed on the dotted line and I wouldn't think of doing that without seeing the RV and inspecting everything in person. Agree on purchase price but since you have to go to the dealer to get the trailer anyway, don't sign anything until you're satisfied everything is right.