Telling a in retail story is like 1 + 1 + = 5. This card, by itself, in the usual card display will do okay. The Olaf plush item in the usual plush display will do okay. The Olaf key chain, too, by itself will do oaky. Placed together, for impulse purchase impact, and they sell very well, and easily, as a pack.
We make our own success as retailers through the strategic and tactical decisions we make in our businesses every day.