Thanks for the input guys. I suppose I was looking at this from the wrong direction. It is probably more worth my while if I lock on interested buyers prior to actually buying vehicles. That way, I'm only buying exactly what their looking for.
Also, as Doc stated, this was more an issue with older vehicles. How much of a restoration market is there, and would it allow me to sell '60s and '70s era cars, with little to no rust, for a profit?