Canada to US Duties, Taxes etc

I have sold a number of item to Astromarter's in Canada but never received any items from Canada.
Can some one detail the custom costs and details, i.e. duties costs, tax cost etc.
Thanks Craig

We do not pay any here in the U.S. and I hope we never will.

Craig Campanelli said:

I have sold a number of item to Astromarter's in Canada but never received any items from Canada.
Can some one detail the custom costs and details, i.e. duties costs, tax cost etc.
Thanks Craig

Probably more than you ever cared to know about import tariffs:

http://hts.usitc.gov/