Used Ford F-350s are available through AutoTrader.com and CarGurus.com. Both sites offer listings that are searchable by location and sortable by price, mileage, distance or vehicle year.
Additional search filters on both sites include make, model, trim and color. AutoTrader.com features an average price for all vehicle searches at the bottom of each listing. The average price for a used Ford F-350 is $26,955 as of April 2015.
CarGurus.com features a deal ratings system that grades all listings on a scale of "Overpriced" to "Great Deal." Deal ratings are based on the listing price compared to the market value of the vehicle.