Please, put the right price tag on the proper display!!!

Okay, so I'm in Shop Rite last night grabbing a few items. There is a big display of Martinson Coffee and a sign that says $1.87. So I get home and glance my receipt and it says $4.99. I was not happy!!!! We call the store and they said the sign was for Choc full o nuts coffee. What da Jakes??? Why would you even put the sign for Choc full o nuts on a Martinson display? Now I have to go back and return it! Wasting my dang gas! That is not cool!!! Shop Rite is about 3 towns over from where I live!