All the growers that come to the local shows seem to have some Vandas, Ken. They're just the showiest thing to hang in a booth to attract buyers, I think.
Don't know about Jim, but I buy Vandas at the discount grower in Apopka since they are $8 to $12 there, and $35 to $60 or more at the shows. About half of the ones I've seen there have tags. They are concerned with selling in bulk, not named varieties. They carry hundreds of one type at any given time.
