Sweet man.. very sweet. The best one I have ever found was at a yard sale.. paid ten bucks and got a Sears sixer with about 25 games. One of them was Chase the Chuck Wagon.
The next best one was a complete Steel Battalion set for the Xbox ($35 at a yard sale)
After that was a semi-working Xbox system for 5 bucks
Finally, a complete Stack-Up game for the NES, CIB, for 3 dollars at yes, another yard sale