Im thinking this may be a motor home? it helps to tell us what it is and the length is the critical issue for pricing. there is not enough information, for me to guess however you can go to www.nada.com type this in your web search box click on consumer and click on Recreational Vehicles. You should be able to get some idea. also RV Trader which is part of auto trader should have an online magazine you can check all 50 states to see what similar vehicles are selling for, After you fill in the search parameters in auto trader leave any distance and type in your zip code and the search engine will check all the states.