I first met Reina Sakao on Google+, she’s active in the the Japanese Tea Community.
She posts beautiful pictures of teaware there, so I encourage you to join.
It’s a Japanese company with a branch office in Canada, and they ship to all over the world.
If you happen to live in Japan, Sakao Enterprise also offers Japanese tea ceremony classes there.
One notable aspect of the online shop is that they have a large collection of matcha bowls (100+), you’ll definitely find one that suits your taste.
Reina also talks about how to choose the right matcha bowl, which is something you don’t want to miss.