B.B.
Before you get too upset, I noticed it too, so I asked my cousin about it, who is a manager there. She said that when the put the new "Now" price tag up, which really is a discounted price, they replace the old tag below it at the same time. The reason why is that they only leave the "Now" special tags up for a short period of time, usually a week to two weeks, so when they have overnight ppl take them down, they just pull the "Now" tag, and leave the updated price tag below. It makes their system easier.
Hope that helps. :)