FREE Fur Fighter at Target

I wanted to check this one out for myself before I posted. I was able to score 2 of these for $0.46 (tax) so here you go...

Target has advertised their Scotch Fur Fighter with Refill Pack for $3.99. There is a $4 off coupon here. (It's a PDF so you can print as many times as you'd like.) This makes them FREE.

Now here's the deal: at the store, these ring up for $7.99. They even have a tag near them saying they are on sale for $7.99. BUT it clearly states in this weeks ad that these are to be $3.99. The cashier has an ad in his/her drawer. Politely point it out. A manager will have to come and okay it, but since it's advertised, they will most likely correct the price to $3.99. The coupon will beep, but the cashier will push it through since it is on the correct item.