I read last week from a NY Times article that despite the recession Amazon.com had a break through month with 6.3 million orders on December 15th, which translates to 73 items each second. Last year they had 5.4 million orders on December 10th.
Amazon.com has really transformed their business, from selling their own inventory, to adding a marketplace of many different stores. This is what really sets them apart from their competitors, by being able to offer so many different products and prices. For Christmas, I ordered a gift on amazon.com which was $11.00, elsewhere that same gift was $22-25. The price difference was amazing and is what makes amazon such a successful ecommerce business.