68tpls, is correct, there are tons of them out there. My friend Mike usually buys any 14" or 15" Rally IIs we can find at any swap meets and he will not pay more than $25 each. When we get them home he checks them over, some are good and some are not.
It's just a matter of finding a good set. They are definately out there. In fact, we have had two different guys at cruise nights come up to us and ask if we wanted complete sets of four for free!