Price changes are a PAIN. It seems they're constantly changing; I see inflation in action all the time.
- Gas prices went up, so vendors charged fuel surcharge, so prices went up. Then gas prices went down (slightly) but vendors continued charging fuel surcharges so prices stayed level.
- A popular item was constantly sold out, so the company got greedy and upped the price so much that demand decreased to practically nothing. So then they lowered the price considerably.
Each time prices change, something gets missed. Maybe we change the price on the shelf but miss it on a special display. Or perhaps it's an item that is priced individually so we re-price most of them but miss a few that are cross-merchandised in another section. Very few customers realize the pricing error until AFTER the transaction is finished or until they get home. Then there's the trouble of doing a return and reselling the item at the price listed on the shelf, then changing the shelf label.
My wish: change prices quarterly or better, twice yearly, as needed. Any more often than that, and it gets out of hand.