Dear valleychic,
Thanks for bringing this up. Many eBay Canada sellers have contacted us to recommend that we support the eBay Canada shipping calculator and we have the additional of that feature on our list of future development projects. There are a number of other projects that will come first though, such as the Auctiva stand-alone store product and support for posting to eBay Germany, so it still may be quite some time before we can free up the resources to develop shipping calculator support for eBay Canada.
I am unable to give you an estimate of when this might be added at this time because it hasn't been planned for a specific release yet, however, you are welcome to touch base with our customer support team periodically and we'll be happy to give you an update on the situation if any additional information has become available.
If you have any additional questions or concerns, please feel free to contact our customer support team by completing the web form on the following page of our site: http://www.auctiva.com/free-auction-software-help/help.aspx
-Mike