The best prices on new Peterson pipes are at Pipe Divan, Premium Peterson Pipe and Pipe Tobacco Specialists in Ireland.

I have gotten a couple of nice estate pipes at flea markets, but it's like finding a needle in a haystack around here. Pipe shows are good for estates and artisan pipes but that may be a long trip for you in Canada.

Most of my estate pipes have been bought on Ebay. Another good website is Judds Pens and Pipes.