A question for all the fellow Canadians? What has your cross border Audio Advisor purchase been like? I'm thinking of buying an Athena AS-P6000 subwoofer from www.audioadvisor.com for $300US. I'm prepared to pay approx 30% extra for taxes and duties, but is there anything else I should worry about? Has the price of shipping always been accurate on your order? It's telling me that shipping is $2 for this 12" sub. Basically, just looking for you tell me about your experience.