Ive purchased one vehicle from e-bay, one from craigslist and one from e-bay,
you gotta cast a wide net when you're looking for a particular vehicle.
Just check it out good, carfax, etc.
Ask for maint recipts, EVERYONE will SAY they did the maint, but few can prove it.
Yakaz
http://cars.yakaz.com/
and trovit
http://cars.trovit.com/
seem to be a good search engines for used cars.
Im looking for a 12V club cab 4 speed 4wd Shortbed for someone, and aint found it yet though slushboxes and 24v's are plentyful.