The prices sound good. The duty costs I am unsure of but they will charge something.
The one important note which could become a problem is warranty service work. I don't know if all companies are the same but some state the warranty work must be carried out in country of purchase.
On average I would say that any item purchased in the states and shipped up to Canada would add around 40-50% to the price with taxes, exchange, shipping and duty charges. Like I said the duty costs I'm unsure of as the free trade rulings may save us that import cost. Not sure.
On the taxes portion of my earlier stated receiver costs did not include our 14 or 15% tax premium.
Troy