In general, here in SoCal the wholesale price is/was about 1/2 the retail price. Now that BTA's have acquired fancy names, online vendors will cherry pick BTAs at the same wholesale prices and jack them up 10x the wholesale price because people will pay more for a "Rainbow" BTA than a rose anemone with green tips, even though they are the same anemone and go for the same wholesale price.
Stepping off my soapbox now.
I don't have a problem with "farmed" anemones fetching a higher price, but for the most part many of the "designer" anemones are just look-a-likes pulled from the wholesaler's bins.