Hmmmmmm..... Used rig right? I'm sure there are issues that the dealership has not dealt with yet, as there would be with most any used rig. Typically the dealership will not "go through it" until there is a solid potential sale (a.k.a. a deposit).
While YOU have full intention of buying the rig without a deposit showing intent, I can understand why the dealer is skeptical. For every real buyer like you, there are 50 others who have no such solid intent of buying and the dealer isn't about to spend time and money prepping the rig for nothing.
Your notation on the offer was completely reasonable. The dealer's attempt at up-selling warranties and add on's is typical. All you need to do is stand firm on both issues.
Selling RV's is much like selling cars, only 100X worse. There are way more tire kickers than buyers in RV sales, compared to autos. It makes the process more frustrating for BOTH sides of the deal.
