I was in my favorite LFS and had a group of guys walk in and ask the name of the Acan and the shop owner said " I can tell you the official name, Acanthastrea, but in regards to the community name I couldnt tell ya" and they said "Well we just want name brand coral so if you dont have any were sorry" and walked outWhat I noticed is the shops near me that are most well know are more expensive. Litterally the same coral but with a made up name mixed with the store name or initials +$$ and sometimes +$$$ like they invented the dang thing.