I'm afraid I can't offer much help. The guy local to me doesn't do mail order and has only 25g specimens anyway so he wouldn't be an option even if he did. (He never received any smaller ones.) I am not certain but he may have told me that he was the only one to get them from the grower this year. If that's true (my recollection could be wrong) then your only source would be a gentleman named Carl Munn in Oregon. I don't know Mr. Munn, the name of his business, or even if he does retail. Google might turn up more info. For what it's worth, I have been told by a person very knowledgable about Japanese Maples and who used to contribute regularly to this forum that Mr. Munn is a reputable grower. Maybe others here know more but I'd say patience is probably required, perhaps next year it will be easier to find.