Welcome to the RV Forum, Peter!
What type of RV are you thinking about? Motorhome or Fifth Wheel? You may wish to consider purchasing a used RV as there are many for sale at this time due to the economic conditions, where people are trying to liberate themselves of extra expenses.
There are many more RV's on the market than have been before, but you would need to devote some time to look at them in person to ensure the vehicle is as it is is advertised.
If you have the time, you may wish to check out the areas of the Country where large numbers of RV's are on the marker such as Florida, California or Arizona.
I know there is an enormous selection in Florida, from dealers but also from private sales.
Another resource could be an RV broker. I have had good personal experience with Harlan Ward at
The Motorhome Brokers as have several people whom I know personally. When dealing with Harlan Ward, it is the seller who pays the sales commission.