I call them sets because all the stuff come in a complete set, gift box, bag, card etc using the same pattern and design of decoration. It's a good choice if you don't have decoration papers at hand but only plain white for printing. Let me remind you though, by using these sets it will cost you some printer inks. So it's advisable to choose light color or white color background template and avoid the dark background to save cost. May be it is good enough when you have no other choice, just for the sake of once per year Valentine's day celebration :P