Check out a mushering supply store. For a Canadian supplier try www.tanzilla.ca You should be able to find booties at a reasonable price. I go through tons of them on my sled dogs and I only use them on a few of the dogs. If you know anyone who runs a dog team, talk to them. They might have a few around or know where to get them locally cheap. Or go walk on their mushing trail--the booties fall off a running sled dog pretty often. Last winter I hardly bought any--I picked up at least 100 off the trail though!