"This is amazing!" Shopper thrilled after finding sought-after items with cheap price tag at thrift store: 'Just when I ...

The spread of electronic shelf labels to big U.S. retailers like Kroger and Walmart has raised questions about a future where prices could change in an instant.

When you have set up the price you are looking for, all you have to do is wait for a notification from CCC. They will send you an email or a direct or public tweet, if you have a Twitter account ...