https://www.uflyit.com/aeolite_faq.htm#Do You Take Trades
Do You Take Trades? Yes, we do. We take other ultralight, light sport and experimental aircraft (equal, lower or higher value). We also occasionally take trades of these items (again, value can be equal, more or less, with appropriate monetary adjustment either direction as necessary): Classic cars, boats (preferably open bow, weekender or live aboard up to 40 feet in length), motorcycles, rail buggies, vintage camper trailers, motor homes, Class 3 firearms.
They make a cool $20k ultralight plane if you have some boats or machine guns laying around: https://www.uflyit.com/aerolite103main.htm