We bought our rig new in August of 2014. The 2015's were arriving on the lot so dealers wanted to get rid of 2014s. The dealer we bought from made an offer we couldn't refuse: less than a used 2013 or 2014 (we didn't look at used 2012s or older). I just checked the NADA used low retail for our rig: still more than we paid for it. I looked at RVTrader. There are 3 for sale in our price range; all are older than ours.
To get the best deal, we waited until the new model year was shipping and then we sent inquiries to 10 dealers for the final best price the dealership could offer. We took the second best price as it was within the distance we wanted to drive. Don't assume that you will get a better deal buying used. Financing costs more for used rigs and you will still have to pay sales tax in many states.
