I'm not sure of any stores that will ship here at all, and certainly none would honour the warranty. I got my Harman Kardon AVR320 used from a member of this forum. It came regular surface mail and I had to pay GST and PST but no duty or brokerage.
HK prices in this country are insane mostly due, as I understand it, to the Quebec distributor being very inflexible in their pricing.
My problem is I simply love the HK, my next unit will be an HK, but I'll be damned if I pay these outrageous markups. FutileShop usually offers a good price once a year at Christmas but that doesn't help you now.
Tyopical US price
OneCall - Harman Kardon AVR135 $399.99
Typical Canadian price.
FutureShop - Harman Kardon AVR135 $699.99CDN/576.27US funds.
That's way too much of a mark up for those of us north of the border.
Good luck with this.