If you haven't bought a new unit in years, you will be surprised at how much better (and more complex) they are than units in the past. Take engines. Most have the Ford 350 or 450 with a V10. They are great motors and there is someone in almost every town in the country that can work on them because they are so common and say F O R D on them.
As to price, we were ready to buy new. We researched for two years, settled on a Phoenix Cruiser 2350. Cruisers are factory direct rvs. We were planning on flying up to Chicago, getting a rental car and driving to Elkhart to make the deal. I doubt if they build fifty 2350s a year and PCs are mostly specked out for custom purchase. Would you believe, a ten month old 2350 specked out more than we were going to buy suddenly appeared on Craig's List and it was less than five miles from our house!! The seller had retired, apparently had plenty of money, and had got into motor homes. He had owned three rigs in less than 36 months, all ordered from the factory. He had decided he really wanted a diesel pusher Class A instead of a small C.
I bought it almost on the spot at a very reasonable price. We didn't have to fly to Chicago, drive to Elkhart and wait for it to be built, fly back up and drive it home. Almost two years later, the only thing we have done to it is enjoy it, buy gas for it and add 200 watts solar.
My point is we have always bought new but this taught me a lesson that you never really know what you might find. The odds of ever repeating our experience are incredibly small I realize, but the point still is there.
Paul