I just bought one from Tempgun.com (Pro Exotics).
It was $25 bucks US, plus 8 dollars shipping, which they knocked down to 4 because of some technical problems I was having with the site and it's pay section.
Duties and taxes came to 9 bucks.
I used to be able to order stuff from the US and only get the odd item nailed for duties/taxes, but as the postal clerk explained, they're checking *everything* that comes through now, so expect to pay. (grumble grumble).