You could start asking on Craigslist and Kijiji. You might be surprised.

Where is your trip, and what kind of conditions do you expect? The type of snow makes a big difference in the snowshoe you need.

In your planning, keep in mind that your M.P.H. will be considerably less than a hike on a trail. Snowshoeing is hard work, especially in powder. And if there's a freeze-thaw cycle, you get a horror known as "breakable crust" that will drive you insane.