Marty, for a period of time, Fly's Joest Porsches were considered the hot setup in 1:32. They were very hard to get for a good price on eBay, because demand from racers was high.
By the time Fly did their 'Poly' cars, it wasn't the hot setup any more, but it was still a good running car, excellent with a little effort. At that point, you could get a good running car with low detail, and their Poly cars never got popular -- recipe for a bargain! :)