I don't see how it's deceptive. It was a short term promotion. Is it deceptive that Walmart doesn't show last week's price on every product in their store whose

I don't see how it's deceptive. It was a short term promotion. Is it deceptive that Walmart doesn't show last week's price on every product in their store whose price has gone up? Further, it would clutter the sidebar with an unchoosable option and make the correct price harder to find.