He has warehouses full of them, and is always adding more by having agents all over the USA snap up cheap bikes, send them his way, and he sells them by the cargo container load to European resale businesses

and he doesn't need a dealer's licence as the law in Iowa only requires that for things newer than 25 years old.

http://www.motorcycle-usa.com/2015/10/article/backmarker-finishing-mikes-collection/