Have you given any thought to loading your own shot shells?
Really don't even need a press.
This guy did it with .44 Mag, but all of the same principles apply. Some empty brass, some powder, an egg crate, some Elmer's glue. Yeah, you will need 1/2 lb of shot, but that will last you two lifetimes and is easily found.
http://www.castbullet.com/reload/44shot.htm
I have put together a few in .45LC and they look to have some potential (have not tried them on varmints yet, but others have).