And to confuse it even more they will then add transportation cost, Dealer prep, Documentation, PDI and other "fees" to the deal. Totally confusing what the rig cost, and that is their plan.
Myfirst suggestion is to shop for a dealer. some (mostly small mom and pop locations) will give you a straight up, out the door price. Research those, and use their numbers as starting points, you know they still have some breathing room in their numbers, so shoot for 10-15% below those prices. If the local dealer your looking at doesnt price that way, ask what their "fees" are and for a list of them, add that to whatever price they are giving you and go from there.
If its not too far from you check
www.rv007.com
they have a SC location that may help and they do price things "out the door".