Is the pricing that different? When I checked the price of 3 BN80s from amazon CA, it saved me maybe a dollar for all three after shipping was added.
It was a lot cheaper when I ordered them (seems like a long time ago), but I don't think it is now. I'm getting them shipped to England so I get charged tax from Amazon.us, sometimes it works out cheaper from Amazon because they include the charges upfront.
Great customer service from Amazon, they have offered to pay all of the DHL import charges.