So far "darsben" has probably given the nest advice.
We recently traded in and bought new. I owned my DP for 9 years and followed the value of other similar rigs. Mine was immaculate and had every upgrade. I knew it was probably worth 95K in a private party sale and 85K in a dealer trade. I also knew that as a short DP (36' Monaco), it would sell fast.
I took 27% off the dealer's new coach price, added tax and license and deducted the value of my trade. I had a number written on a Nada printout that I thought should be a reasonable/good deal. Unbelievably, we hit the exact number. I flipped my page over and showed the dealer....we were done and signed papers.
I knew the dealer did well on my coach, but I also knew that he gave me a good price on the new one, so I was satisfied. I have a good relationship with the dealer and he immediately takes care of whatever I need. We've become good friends. He even had me do the walk thru/PDI on my coach with the new owners. Paying me with a nice gift card for dinner. Coach sold in two weeks.
