What the Hell

Went to the Woolworths foods store in Oak Glen at the Engen Garage. Went to buy milk. After i got the milk i saw this yellow sponges at car section and realised there is no barcode on the product. But anyway there was price under the product that say R17.50. A I thought cool \ i can buy this too after i bought the 2l milk. I only have R50 on me'. When i got to the till no one knows price or what it is