Maison des Trois Thés?

I scored a large tea stash and empty tins from a Freecycler who is moving overseas and ran out of luggage space. Among my new treasures is a large box of “pu er en vrac” from Maison de Trois Thés, apparently quite the tea house in the middle of Paris. Wondering if anyone has any info about this as my internet searches have come up short (other than the fact that this is one of the most expensive tea shops around, apparently).