Just received this email from Walmart:
Dear ericchavez91,
Thank you for ordering from Walmart.
Unfortunately, at the time you placed your online order, Buildcom, one of our third-party Marketplace sellers, incorrectly priced the item(s) you purchased. As a result, the item(s) listed below will be cancelled from your order.
We will be sending you a $20 electronic gift card (one per customer) to your account within the next 5 business days that can be used on any future purchase. We do hope you'll give us another chance to win back your business.