Mary Long caught up with Jason Del Rey, author of “Winner Sells All: Amazon, Walmart, and the Battle for Our Wallets.” - How Amazon often beat Walmart’s low-price guarantee. - The incentives that slowed down Walmart’s e-commerce rollout.  - Why WalMart was hesitant about creating a loyalty program.  - Amazon and Walmart’s push into healthcare.  Companies discussed: AMZN, WMT Host: Mary Long Guest: Jason Del Rey Producer: Ricky Mulvey Engineers: Dan Boyd, Rick Engdahl