I ordered from Hallson's, but just a couple that I couldn't get locally.
I'm lucky to have several really great nurseries within an hour of me that sell hundreds of hosta cultivars. My hosta society is hosting the regional convention this year, so I'm looking forward to (and saving for) that auction, plus another auction that the club does a bit earlier in the year. Hopefully, I'll be all set for the hostas I want to add this season.