It's a bit of a drive for me, but I did manage to shoot one GSSF match a few years ago. Good times, lots of friendly folks there, and they have a Glock armorer on-duty that will check your Glock(s) for free, and replace almost anything damaged or worn. If you have any non-factory parts on your Glock, they usually will be removed by the Armorer and returned to you separately.
Prizes are Glock firearms for the top shooter in each division, and a few monetary prizes below that (depending on turnout); I believe they also award one Glock in a random drawing using all the entrants' names for the pool.
If there's a GSSF match close to you, I recommend attending.