A huge part of the difference is the disappearance of the local dealer. Mega chains buying out the local mom & pop locations and then putting in place all the bad things from the old jokes about used car sales.
Pricing based on you being gouged in the financing, thousands of dollars in hidden fees and mandatory upgrades, and the pressure to buy now or the price will go up next week. All spouted to you by someone that likely has never used the products they are selling as experts.
Use the megastores and rv shows to decide on size and floor plan, and then narrow the field of possible lines according to your wants/needs/budget. (ie; metal or glass sided, interior finishes etc)
And then use the advanced search feature from an online sales program such as
RV Traderor
RVT.comAnd search for specifically what you want, visit the dealers websites, see which ones price their units straight up, no fees. And then compare apples to apples , out the door for what your price is.
The dealer is free to price units how they wish, as an example some may require you to use their "preferred" financing to get a sale price. Or they may add fees such as
Shipping ,,,,,,,,, $1700.00
Dealer prep ,,,,,,,,$750.00
Pre delivery insp
or walkthrough,,,,,$700.00
documentation ,,,,,$399.00
Dealers that price their units straight up are usually proud of it and say so on their websites, those that have the add on fees generally say nothing. Yes, all dealers have to make a profit to stay in business, but as the buyer, make sure you are comparing deals, Apples === Apples.
Local dealer may be convenient sometimes, but many have months long lines for poor service. And if you are using your rig when something breaks, there is a good chance you wont be close to home anyway, so "local" becomes an irrelevant term.