typical big store BS !!!!! They should honor their ad price and give you the real H&R for the sale price

Just a few weeks ago I went to Lowes for a weed whacker, they had two within my price range one was a straight shaft for $70, the other was a bent shaft for $95, 20 feet away from the display was the boxed machines I thought I picked the $70 one, upon paying for it they said $95, went back to the display with the manager showed where I got it from and there it was just one price, but both models where mixed up among each other, he had no choice but to honor the lower price