First off, go to your local library, they will have both the NADA and BlueBook books on RVs. This will give you the wholesale price for your RV. You need to know this because it is what the RV dealer is suppose to give you for your RV, if it is less you will have proof of their honesty. Then the dealer is going to try and rip you off by keeping the price of their RV at full retail. Ideally, you will get full wholesale for your RV and the dealer will drop the price of their RV 10-15%. Or they may play with the numbers and give you more for your trade in and not drop their RV or they may do both. The important thing is for you to know what yours is worth so when they play the numbers game you have the knowledge to know if you are getting stuck.
As for the paying cash or financing just tell them that is not part of the discussion right now, right now you are focusing on price only, paying for it will come later. This way you can avoid then throwing monthly payments at you while you are dealing. If they know how you are going to pay, this gives them more knowledge and they use that knowledge against you.
Just remember, when you have a final price, walk away and think about it at least over night, this helps remove the emotional aspect from the deal and allows you the chance to check over the figures to see if you are getting a good deal. Make sure you get a copy of the MSRP sheet with their figures written down on it so they cannot change something while you are thinking about it.
Another thing you can do is to deal with multiple dealers over a large area and see who offers the best price by using email. This completely removes you from the pressure of one on one dealing and the money you save could more than pay for the trip to go get it, because any dealer will handle the warranty work. Plus this puts you more in the drivers seat as the dealer knows that you are working with others the same way and makes each one come to a better deal, just do not let one know what the others are saying, you want an honest deal, if you share information, you put them back in the drivers seat.
Berniece & Russell Johnson
Lil'Bit, a Netherland Dwarf Rabbit
1987 Southwind
1995 Ford F150 Supercab
Life in the fast lane? No thanks, we will stop and smell the flowers at every opportuity