That kinda seems to good to be true. What do you think is wrong with it? https://www.rvtrader.com/listing/2008-Newmar-DUTCH+STAR+4320-122188996?zmc=search-alert-listing
Something doesn't smell right. It says it's a private seller, but the RV has been staged (those brass decorations are standard dealer staging gear). In addition, it says they have to sell it due to buying a new one like that's an incentive for them having to sell it so cheap.
I wouldn't be surprised if this were a dealer and a bait & switch - you contact them and "oh, it sold, but we know a dealer you can get a great deal from".