Dollar General

I went to the local store looking for Eagle One Bucket Free Car Wash. It is a staple here at our house with 6 vehicles. The price is normally around $5.00 but there wasn't any price marked on the shelf. I took 2 of them up to the register and they rang up .50 each. I went to the other dollar store down the street a few blocks and bought all they had (17) for .50 each. The upc # is 079933285259-3 on the receipts.