There's no movies, just 26 episodes. The episodes are mis-labeled on the first 2 DVD's, though.
If you go here and search "Trigun", you'll find the DVD box set for $140, but it's back-ordered.
It's not like BeBop, though. It more of a comedy series than anything else. It starts off pure comedy then gets pretty emotional near the end. Great series, but you don't have to be a Bebop fan to realize it.