Boaphile makes a nice rack system.
Almost all of the US Rack Builders will ship to Canada. You will jusy have to pay the duties. Depending on the size of your shipment you may have to have a broker clear your order at customs. Duties will be HST on the value of the product converted into Canadian dollars if made in North America. A typical Brokerage fee would be $60 + HST.
I quoted shipping from Animal Plastics for a hatchling rack and it was going to be $192.00.
Try Cornel's World. He is located in Alberta (I think) and makes nice PVCX racks that offer either back or belly heat and come in all of you typical Hatchling/Juvinile/Adult and Breeded rack sizes.
Happy Shopping