Well than call living aquarium in Cambridge he had a few in about a month ago and a guy asked him how much and if he was selling them and the kid said he was waiting to get them to eat prepared foods before he sold. same with a dwarf wrasse he had so...I am for doing Qt on corals and fish in order to provide customers with the confidence in the health of your livestock. But...
You are right about few stores QTing the livestock and for the most part, probably not a big deal. However, there are a few exceptions that I think should never be deviated from. And due to the sensitivity and how finicky the CBB are, That is one fish I believe should absolutely be QT'd
At least the stores that do fast track the livestock out offer much longer guarantees though.