I have three of these and two painted coffee mugs, but I'm not ready to sell yet!
but, mine all came through Jim Doyle at Natures way who used to get them often and he had an old employee who bought most of them when they came in. You might call Jim and ask about that? His name is slipping my mind right now but I'm sure he no longer works there and may not even still be into bonsai.
also, Pauline Muth of PFM Bonsai carries a lot of his pots and she might have some.