Anyone know where I can buy Mariage Freres tea in either Calgary or Vancouver?
Try Williams Sonoma in Vancouver. The WS stores in the US carry some flavours (Marco Polo, for example), but not a huge variety.
When I lived in the US, I used to order from the Cultured Cup. Wide range of MF teas, plus excellent customer service. I don't know if they'll ship to Canada, though.
Just out of curiousity, how much did you pay for shipping from France? I've always wondered about that. Luckily, I live in Japan right now, so I can get MF teas relatively easily!