First released in 1993, Ducati's legendary Monster is considered one of, if not the, first factory built, mass-produced naked bike. Since the first Monster rolled out of the factory, the bike has come with numerous different engines and in a variety of trim levels. Through it all, though, the Monster has kept both that gorgeous exposed trellis frame and its bad-ass bona fides.
This 2004 Monster is located in Brownsburg, Indiana, and is probably the best deal in this list. It's damn near brand new, with only about 7,800 miles on the clock. It's been lightened by 20 pounds and heavily breathed upon by Indy Ducati in Indianapolis. Buying a low-mileage Monster like this for under four grand feels like theft, but hey, if that's the owner's price that's their price!