Yes! there is roll back on items, but there is an even better way.
You may or may not have heard about the Walmart app which is available on both Android and IOS devices.
Go into the app, click the 3 bars laying down on top left corner and then click price check. the camera will then open which will allow you to scan product. may not work for everything in the store, but it did work for what this guy bought!
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