Really? Interesting. If you don’t mind me asking what exactly did you order brand(s)/flavours.
I’m almost starting to think it all depends on who the border agent is that day and how they’re feeling.

As Joseph Cross said above “10 tins came in at under 100$ in duties”. I have had a similar experience, same province, same number of tins, for the same amount of duties. Maybe it is provincial based? irdk. Since then I’ve kept all my orders small to avoid duties altogether.