Have you looked at the high-speed mode on the Casio Exilim cameras? Up to 1000 frames per second! It might suit the bill for what you need.
Here's a link:
Here are some slow motion video samples from the FH25, even a golf clip too.
If you look up "FH25 golf" on youtube you will pull up a bunch more videos.
Manufacturer list price is $349 and the online prices are much lower.