I think that the high price of pro-level track frames is a function of the small market. If there were more of a market, more companies would be producing race worthy frames, and the price would go down. Same thing happens to wheels, but with different results: there are fewer companies competing, and so the weight has not been driven down quite so far as in road wheels. The same thing happens to the price; rear disc wheels for track or TT from companies like Zipp are amazingly expensive. If as many people watched track cycling on TV as the tour, we'd have super-light Mavic Cosmic Carbone (or Ksyrium) Track wheels.

As it is, it makes more economic sense for a company to put the development money and effort into road-specific product lines, and let track parts fall by the wayside. Pro track racers are going to buy pro level wheels from a company because they are all that's available, not because they are a few grams lighter, or a slightly better deal. In short, the lack of demand has resulted in a lack of supply, and a lack of a more competitive market.