Walmart's Amazon Prime competitor, ShippingPass, is now available to all customers in the US, complete with a 30-day free trial. Reuters reports that current subscribers to the $49/year two-day shipping service will get also get month free as the big box giant works on building its services for customers.

Walmart launched ShippingPass last year as a means of competing with Amazon, though it was confined to a small number of cities across the country. It initially offered three-day shipping, but the company started testing two-day shipping last month. Today's launch makes it an attractive alternative to Amazon Prime, which costs $99/year. Retail Dive also reported in April that the company intends on spending $2 billion by the end of 2017 to build out its e-commerce business.