It is kind of interesting how there is no real middle ground with track wheels. You have the lower end, heavy box-section/small-aero-section rims (Ellipses, Volos, etc). Then you have the high end deep section carbon wheels. You don't have any light weight small section rims for the track.
I guess the people that are going to buy expensive track wheels are going to buy deep section carbon wheels, and the people who aren't going to buy deep section carbon wheels also aren't going to buy lightweight (expensive) small section wheels either.