In short
Nintendo Switch fans add a banana for $0.20 at Walmart to get a discount on games
At the checkout in the grocery store, the cashier scans the items as fruit and vegetables and lowers the price.
Walmart's bananas are now shown as unavailable for online delivery.
Read the original story Why do Nintendo Switch 2 fans put bananas worth $0.20 in their Walmart customer carts? by Phil Haunhorst on se.beincrypto.com