I wouldn't ship a double-edge blade to Australia or Canada. It's a hassle for the buyer, and as a seller you wonder whether the credit card payment will get reversed while Customs plays with the knife for months. Also, I'd stick with insured Global Express Mail, reglardless what the buyer may request. Just pass on the sale if the buyer balks at your shipping requirements.
whitie
Double edge blades are NOT illegal in Canada. I have purchased 3 from the U.S no problem. The criminal code of Canada does NOT restrict double edge knives from import. Personally I have never had any customs problems with knives coming from the states. 90% of my collection was purchased from US sellers.
As was stating above you CANNOT import Bali's, automatic knives and push daggers, knives with brass knuckle type D-guards, but lately customs has been getting prickish with Spyderco's or anything easily "flick-openable".
As long as you have the above info doing business with Canadian customers shouldn't really be that much more complicated than regular U.S customers.
Don't decide arbitarily to avoid doing business with Canada. 30 million people right on your doorstep, green is green after all!
We are friendly and we are by far the U.S's biggest trading partner.
Regarding shipping costs actually its usually as cheap and very often CHEAPER for me to buy from a U.S seller. Its not really a matter of country but of region. Easten seaboard, midwest, pacific coast etc. I'm in atlantic Canada the shipping costs of a knife shipped to me from N.Y state costs the same or less as one shipped from Ontario. I know i received 2 last week, one from NY one from Ont. The only thing to avoid is UPS who tend to charge outrageous brokering fees i got dinged for 50$ once . the first and last time i used UPS. I always make sure knives i order from the U.S come via USPS. At worst when you receive it you will pay a 5 dollar handling fee. The last two packages i got from the U.S i paid no handling fee, no taxes, no customs. It really varies.