It would be helpful for these flip cards to be named consistently and only after the name of the card before it is flipped. I don't think it is logical to search for the flipped name of the card.
Other than the conceptual problem of there being two versions of the same cards existing as different objects in the database, there is also the problem that the flipped cards in the database do not have price information attached to them (because no one anywhere lists them that way).