For example, perhaps (just speculating based on my limited knowledge of these cars):
* because the coupes look "cleaner" than the Targas
* there are problems with leaks / noise
* noticably more body flex
* people that want the true open-air feeling go for the convertible (less demand for the Targas)
Pretty much true. Most of the concerns with the targa were takin care of in the 993model in 1997, however they still had noise from the huge roof that slid all the way back to the rear glass. The panel itself is huge by comparison to the sunroof offered in their coupe. Looked at 993 models before I purchased the NSX and less than 500 are produced world wide per year which makes them limited. From the pricing in saw, most were asking $3 to 5k more for a targa over a coupe. Personally I don't see the logic, just guessing its for those that have more money than sense or want something unique.