Take a look at : Creation-advance
The new one are : Rocket, Joji
Looks like the Densetsu Weed coasters images come from Ginga Densetsu Weed Artbook or Original illustrations collection.
And for me the Ginga Nagareboshi Gin images on the coaster remind me of the manga series from the year 1997-1998, Some say the Pocket editions (Shueishe Bunko)
Well Not Gin image but at lest the others
I hope that the Creation Advance will soon update their stock.
For the product they have in the store seem to be selling well ^^
Thank you for the update : Weedpedia at Twitter