One rule of thumb governing utensil purchases is to consider the cost of the item in relation to how often you'll use it. Since cherry season is so short, a pitter scores pretty low on the price-use ratio. But the formula is badly flawed, not taking into account how this gadget affects your life when you put it to use. By that reckoning, if owning a cherry pitter moved you to make this soup just once a year, it'd be worth the ten dollars or so you can expect to pay for it.
Cooks' Note
Refrigeration/Freezing: Refrigerate up to 3 days. Freeze up to 6 months.