You're not going to believe this, but working at Walmart doesn't pay very well.

--Most of their 1.4 million workers make minimum wage or a little over that. And even though the government says people can live on $8 or $9 an hour . . . imagine trying to support a family on that.

--A new study out of the University of California, Berkeley figured out what would happen if Walmart paid all 1.4 million of their store employees a living wage . . . $12-an-hour . . . and passed 100% of the cost on to the customers.

--And the answer is . . . your average bill at Walmart would go up 46 cents. That averages out to about an extra $12 per year per customer.

--There's no comment from Walmart about the study.