A suggestion... I don't know where you get it currently. But if you don't go to a local tack/feed (horse/livestock) store (not to be confused with a pet store that has horse stuff too), go there I bet its alot cheaper.
Are you only looking for pellets? Or "shavings" as well?
Tack/feed stores will have alot of options for you.
Let me know if you need places in your area I can get you a list.
And PS I do use ABM for horses
I do go to a local tack/feed store, we just call them feed stores for short. I live in Brooksville, Fl (aka horse country!) so naturally there are a ton of feed stores around.
Only pellets. I'll definitely have a look around for other brands.