View Full Version : Amazon.com Customer Service re Sales Rank

05-08-2009, 03:47 AM
I thought some might be interested in the following excerpt I received from Amazon.com re their sales rank for each book on their used book site:

"Yes, sales ranks are based both on Amazon.com and Marketplace purchases i.e. comparison between all books we sell (new and used).

Sales ranks are updated every hour of every day around-the-clock for each of millions of items. An item's sales rank is a reflection of its entire sales history at Amazon.com. In order to keep these lists fresh, useful, and up-to-date, recent sales are weighted more heavily than sales that occurred in the distant past."