I agree with jplante4 and hoopers. If I am a dealer and have new units, used units, and consignment units, I have my priorities. Obviously I will try to peddle my new units and used units first. Money I spend as a dealer in advertising my units puts out the information I feel is needed to get folks to come in and check them out, or at least generate an initial call. I don't need a 500 word inquiry asking 1,000 questions about a unit I don't have all the answers to sitting in front of my computer anyway.
Most RV dealers set sales records this last year. I guess most folks are able to find what they want. IMHO the OP needs to get in his vehicle and start doing a little leg work.