Wal-Mart to Launch $50 Shipping Service to Challenge Amazon Prime

Wal-Mart is planning to test a new unlimited online shipping service this summer for $50 per year, a move that may hurt Amazon.com's annual $99 Prime shipping service. Wal-Mart's service, which will be by invitation only for now, will offer selected products on the company's website to customers within three days or less, company spokesman Ravi Jariwala told Reuters. Wal-Mart offers more than 7 million products on its website.