First, welcome to iRV2.
As soon as you buy it, it is a used trailer plus it is 2 years old. Check the value on New Car Prices, Used Car Values, New Car Reviews & Car Buying Guides - NADAguides.com Official Site
and I would offer no more than LOW RETAIL in the current RV market. Truth be known, the trailer is probably really worth about $15,000 tops.
Also, Fleetwood is no longer manufacturing towable products, so it is now an orphan. Orphans do not bring as much money as do non-orphan units.