There are a lot of guys selling pins in Ontario.
DC Amusements in Schomberg, ON http://www.flipd.ca/dca/
Pinball Exchange in Toronto, ON http://www.pinballexchange.com/topec%20pinballs.htm
Pinball Outlet in Woodbridge, ON http://www.pinballoutlet.com/fr_sales.html
Just to name a few. I put them all in my bookmarks and look at what they have from time to time.