Svs sub i wil lhave to order online and will have to pay shipping on top and may be custom duties?
You can contact SonicBoomAudio (SBA) - SVS' Canadian distributor - by phone or e-mail. You will pay taxes and shipping. No customs duties because, as I already mentioned, SonicBoomAudio is located in Canada.
Buying from any shop in city is an advantage.
There's an advantage in the sense that you can demo it and, depending on the shop, possibly return it if you don't like it. The disadvantage is that you don't get the same value (performance for money) as buying Internet-direct (ID).
With ID companies in the U.S., you can occasionally demo for the cost of return shipping only, or - in the case of SVS' recent Black Friday sale, during which they paid the cost of return shipping - you can demo for no cost at all.
Up here in Canada, demo-ing will most likely cost you shipping both ways. But the option is there.
If you do your research (forums, reviews, etc.) and talk to the comany reps (Mason at SBA is a good guy to deal with), odds are you won't need to return anything.
-- Edit --
Another Canadian option is Funk Audio
. Not sure if they have anything in your price range, though.