Free Delivery Creates Holiday Boon for U.S. Consumers at High Cost

For top U.S. retailers, free delivery is now the norm. That is good news for shoppers, but not so much for investors. During the just-ended holiday season, outlets from Target to Wal-Mart to Amazon expanded their free-delivery options, adding more items eligible for free shipping. They also did away with minimum spending thresholds to qualify for the perk. Yet as