Could be US importer is taking more. Could be Canada is really taking too little money. It could be a lot of things. I know it is hard to make money on specialty lines, so I would hesitate to use the word "gouging". Does the US guy travel more? Advertise more? Give dealers more margin? Who knows.
I would say you can choose to import gray market, or contact the importer and bring up your concerns and try to meet at a middle ground, or pay full price and live with it, or select another speaker out of frustration with the price structure. But you will not get a definitive answer on why it is why it is. And do you care? If you want to buy them then I would focus on getting the best price, bringing up what you did here with the importer.
I would say you can choose to import gray market, or contact the importer and bring up your concerns and try to meet at a middle ground, or pay full price and live with it, or select another speaker out of frustration with the price structure. But you will not get a definitive answer on why it is why it is. And do you care? If you want to buy them then I would focus on getting the best price, bringing up what you did here with the importer.