Walmart will launch a sale on Wednesday to beat Amazon's recently announced Prime Day, including more than 2,000 online exclusive discounts, called “rollbacks.” The deals are in electronics, home, baby and toys, and the price cuts will last for three months. Walmart has also reduced the minimum order for free shipping from $50 to $35 for at least 30 days. Amazon Prime members pay $99 a year to be part of the service that offers free two-day shipping and access to video streaming and music. Walmart's pitch is that you don't have to pay a special tier price for deals.