A discounted price doesn’t always save you money.
If you already decided to buy the item and it happens to be on sale, you saved money.
If you already decided to buy the item and you waited until it went on sale, you saved money.
If you already decided to buy something from this category, and picked this one because it was on sale, you saved money.
If you saw that it was on sale and THEN decided to buy it BECAUSE of the sale, YOU DID NOT SAVE ANY MONEY.