The Courier, Express, and Postal Observer notes that, "Amazon offers same day delivery in seven cities with orders placed in most cities before 10:30 am. Barnes and Noble offers same day delivery in Manhattan. The growth of this same-day market is limited by both demand and the cost of home/business delivery relative to the cost of the item sold. Same day delivery is of interest to Amazon and other internet-only retailers because they compete with companies like Best Buy and Sears that offer on-line sales with store pick-up. Having a lock-box at least as close to a consumer's home as the nearest Best-Buy or Sears store would allow them to expand their same-day service to smaller cities at the same time they lower the cost of shipping those items." Read the full blog post here.