To find Japanese designs from lesser-known manufacturers, including those made by Dameya himself:
https://www.dameya.net/view/category/ct156
PLEASE NOTE: The site is in Japanese only. So, remember to enable your computer's translator...
For those who don't live in Japan, you'll need to use WorldShopping, which orders for you, receives the delivery in Japan, and then ships the order to the other side of the world.
This increases shipping costs, but it’s worth it to find items that are otherwise impossible to get...