The only popular ID sub company from the US that has a Canadian supplier that I know of is SVS (Sonic Boom Audio). ED, HSU you will have to pay extra fees to import them to Canada. Funky Waves Audio is a custom subwoofer manufacturer that builds some of the nicest enclosures with the highest of build quality that I have seen put together with some top notch drivers. Some of their models have built in amps others use external. They are also Canadian so shipping would be a lot less than some of the others.
How much duties and taxes do you guys pay in US? Here in Japan I paid 30 bucks on my ep350. I thought it was cheap.
