Money making from batteries?
Walmart sells 2 9v Duracell batteries for 8.97$ and it has 6 AAAA batteries inside each one
And Walmart sells 6 AAAA batteries for 9.70$, that means that if you sell the 12 AAAA batteries from the 2 duracell batteries you would get 19.4$ that’s a 10.43$ profit from them if you sell them on ebay or something