Lots of stores are stocking antlers now. I'm always on the lookout for non-rawhide chews, and these look great! Except my shiba gets way too possessive over long-lasting chews, so we can't really keep anything around that will last for days/weeks on end.
Best Bully Sticks has a bunch here:
http://www.bestbullysticks.com/home/bbs/search?keywords=antlers&submit.x=0&submit.y=0
A lot of indie sellers on Etsy often have them for sale, too:
http://www.etsy.com/people/WildandWooleyTreats
We like Himalayan yak cheese chews, salmon skin rolls (here's a video of Bowpi working at one: http://www.youtube.com/watch?v=_4SCwZOGiMA), and C.E.T. Dental Chews (which are beef rawhide, which I know some people don't like, but my guys seem to have done all right with these).
As for weather and its proportional relationship to vet costs… HMM... Considering it's raining sideways outside my window right now and Bowpi refuses to be pulled off the front porch, I'd have to question that equation. Nah, actually, yeah, we do have amazing weather almost year-round, so it's a great place to live. But very stressful if you "ain't got the Dough-re-mi," as Woody Guthrie sings.
I've honestly given consideration to finding a job in, say, rural Texas or Montana or something when I'm done with my degree, if only for lower vet costs... among other advantages!