Currently is you update the price of an item on the backend in product manager the items will not update on the front end of the store. So if I have a rule to apply $3 to a decorated item that $3 is only applied to cost of the item when was created. However if the cost of the item goes up, due to inflation, I would only want to change the cost in the product in the product manager and not to every instance that product exists on every store.