I bought a set of Rack Time panniers (I think the model is called Travel-It) from Sierra Trading Post for under $50.00. They are made by Ortlieb, and have the Ortlieb attachment system. They seem to be sturdy and well made and have built in rain covers which I haven't used yet. When you join Sierra Trading Post they give you an additional discount for joining. Considering the costs, the price plus shipping to Canada may still end up cheaper than most things you'll find elsewhere.