Reader generosity (thank you, Paul VA!) has gotten me one of the plants that's been on my want list for a long time, Euphorbia leuconeura.
He even sent a slightly smaller duplicate, just in case.
Not a lot to say about the plant yet; I only just got them last Thursday. The only thing that's really jumped out at me so far is that they're a lot prettier in person than I was expecting from the photos I've seen on-line. (The above photos included.) Some plants just don't photograph well.
But wait! There were even more bonuses! Agave potatorum 'Kissho Kan' and a duplicate:
I hadn't asked for this specifically, but I'm always happy to make the acquaintance of more Agaves (with the possible exception of A. bovicornuta, which is much too stabby for its own good), so this is also awesome.