Let's say you wanted to buy a limited item. When you put in the price, it will look at the lowest price for the hat. If the hat was originally 45 R but was selling for 2000 R, it would show up as 2000 R in the catalog.
But it would make searching a ton easier. Instead of saying, "WOAH! 45 ROBUX FOR THIS HAT!" *Clicks on page* "WHAT? 2500 ROBUX?" It will just make things easier.