Exactly, Feh! I've worked retail as well so I know all about price switching. At Thrifty Drugs where I worked from 1985-86, it was so blatant when the welfare moos would change the stickers on the hair care that was more expensive. They would act so offended when I or another cashier caught them at it and got a price check done from someone working the "floor".
Back then, security did not make an issue. It is now an issue because of how much more this practice is being done to steal under the guise of paying the lower price. The woman in the Wall Street Journal article re: the flip-flop debacle at K-Mart was an upper-class housemoo who knew she was placing ADULT footwear into a box for toddler shoes that was half of the price.
She knew what she was doing but was upset she actually got caught and "trespassed". The yuppie housemoo probably thought she would just be given a lecture and let go since she was not a ghetto moo. Even when I was a bagger at Alpha Beta (before my Thrifty days), the Marin County SAHMoos also would try to trip up the clerk by using coupons for stuff that was not in the cart.
The consumer ends up getting the costs passed on when any sort of theft happens. Even thrift stores have raised prices and have less sales due to the welfare moos who even steal from places like Goodwill or Salvation Army! It is really pitiful to steal from a thrift store. I worked with a guy whose wife got some stuff stolen when she had a garage sale!