Craig,
There are no duty charges on loudspeakers from the U.S.
Taxes will include GST as usual, and other charges may include a brokerage handling fee (usually b/w $20 and $60 depending on the carrier) along with shipping costs (depending on the retailer).
I have personally found that if the U.S. price is around 80% of the Canadian price that after these charges, it almost works out to the same price locally. Many U.S. purchases do not equate to greater savings (eBay type items may vary more than retail outlets).
Being so close to Ottawa and Toronto, you may find local shops to be worthwhile. There are a few online dealers, a couple not too far from yourself, that would probly consider shipping items to you directly.
The shops include:
Marc's Audioshop in Ottawa
OZ Enterprises (outside Ottawa)
Audio Express (Saskatchewan)
I am not sure if these shops would carry the Hsu however.
