I don't post here to often, but I can attest to the trees that come from Wabi Sabi. I have purchased 5 different varities of Japanese Black Pine and I have bought several Kishu Shimpaku from him as well. Top notch trees to say the least. He sells mostly pre-bonsai. Good person to deal with and he definetly knows what he is doing. He will go the extra mile with you.
I bought a cork bark JBP 'Ondae' from him last winter. Dealing with Dave was easy, and the tree was really good. I did not deal with eBay, but dealt directly.