There is much confusion over the difference between a "dealer" and a "broker". A dealer sells the airplane he owns. A broker sells an airplane for the owner for a commission. In a slow market, many dealers would rather broker airplanes so they avoid long holding time expenses.
As a seller, a dealer will provide the fastest case sale. However, they can only pay 10-15% below retail market value. If you are not in need of immediate cash, the brokerage arrangement might be best. As a seller, it is prudent to pick your broker wisely. Some questions to consider: