Maybe not the right place to put this, but I recently used the Purolator Ground option from B&H and I have to say I'm grateful to have a lower cost option for importing from the US.
It was a small ($99.99 after $30 rebate) item, but half the price of buying up here. Normally, shipping would've driven up the cost of small item so that it wouldn't have been worthwhile, but here's how the costs broke down here:
Shipping: $8.22 (vs. $27.71 for the cheapest UPS)
Duties: $5 (even using USPS, if there's anything that requires any calculation of taxes, there's also a $5 flat fee)
Taxes (HST) $13
Brokerage $1.50
Disbursement $0.54
Security and Handling: $0.50
Total $128.75
Got to Toronto in less than 48 hours. I'm very happy to have this option--now I don't have to throw extra stuff in my cart to make the shipping costs worthwhile!