back in the day, sellers used to charge taxes of their own accord when they were honest and reported to the CRA, they would post their GST # in the posting IIRC.
that's b/c some ppl would charge taxes and pocket it and didn't have a GST #
but some ppl would only charge you taxes if you were in the same province as them.
i wonder if my seller is in china - are taxes still applied on ebay.ca?