USFS and NPS both rent canisters very cheaply but they're Garcias, which I can't recommend (heavy, odd-shaped and hard to pack/unload). I looked into renting a Bearkade and decided to buy one instead--total rent and shipping costs convinced me owning one made more sense. Ten years later it's proven true, but I'm in California where it gets frequent use.
You could buy one, carry it, send it home, sell it on gear swap and get much of your money back. Having a Bearvault shipped to KM is not a bad idea either, and they make it easy for you.