I'm not canadian however some of my greek gear comes from online. There are a million sites online I'll list the ones I can think of off the top of my head.
http://www.uniqueonline.com/-Unique Impressions...........they are out of Delaware. I haven't ordered from them but I like what I see in their catalog just a little limited on funds at the moment
http://www.greekgear.com............Have ordered from them. I was satisfied.
ebay............ordered many times from them they sometimes have some great deals....
http://www.ubgreek.com/- they only have stuff for Phi Sigma Pi, Delta Phi Epsilon, Alpha Sigma Alpha, Phi Chi Theta, and Kappa Epsilon.............so if you are in one of those organizations you could shop there
Also I'm not sure what organization you are in or pursuing ai into (I think I read your update a while back) but you could check the national site......they most likely have a store of their own or they will give you links to places online where you can buy stuff with your letters on it. Hope that helps some!