I can only order from within Canada, and so can't speak to the American experience, but all vendors from which I've ordered livestock have responded to my enquiries within a day. I wouldn't deal with them otherwise.
It sure is fun telling those in the lower 48 about our temperatures, though! I had a chat with a representative (owner) from Ruby Reef Rally on Saturday, and he cackled when I told him that the temperature "wasn't too bad" at -20C. Well I mean, it wasn't too bad, because that just means a winter jacket and a tuque (and mask), instead of a parka, mukluks, and snow goggles. -30C is iffy for me, and I just find temps below -40C to be brutal.