Really it just depends..... no cut & dry answer.... depends on the camper type & size & the area & the availability of new ones & how much they went up....... Deals can be had here because jobs went overseas & many unemployed.
But our son had to sell theirs one year after they bought it he only lost $500 in price but he got a great deal on it new. But it was in the lower price end at $15500.
But when we bought the 2006 in 2008 the economy had tanked & we we able to buy a two year old, only used several times, @ several thousand under new and the dealer threw in the fifth wheel hitch. It was like new condition. It sat on the dealers lot for a year due to the bad economy...... If I had the truck I have now I could have bought a new three year old Sabre at dealer cost. No one in this area wanted a big trailer.