Walmaret is expanding its grocery delivery service nationwide.
Walmart's "Delivery Unlimited" service will deliver grocery orders to customers' homes for either $98 per year or $12.95 per month.
The service will be available by the end of the year in 200 metro areas, reaching more than 50 percent of the US population.
The next step: delivering straight to a customer's refrigerator.
That is being tested in Kansas City, Pittsburgh, and Vero Beach, Florida.