Francais:
http://abebooks.typepad.com/aide_vendeur/evaluation_vendeur/index.html
Deutsch:
http://abebooks.typepad.com/verkaeuferhilfe/erfllungsrate_und_bewertung/index.html
Espanol:
http://abebooks.typepad.com/informativo_abebooks/2007/05/ndice_de_servic.html
Bookseller ratings are based on your completion rate only and this rate is generally calculated in the following manner:
Completion Rate = (Total Number of Order Items Unfulfilled Order Items Returned Order Items) / Total Number of Order Items
The Completion Rate Percentage is shown as a percentage.
So, for example if you had a total of 75 orders, cancelled three of them and had two returns, your completion rate would be 93%.
(75 - 3 - 2) / 75 = 93%
The Completion Rate percentages are translated into a 5-star rating system.
AbeBooks defines completion as orders that have been completed without cancellation or return.
Any time a bookseller has three or less order items during a rating period, a default 4 star rating is granted. Once four or more order items have been received, the rating is based on the calculated completion rate. The same is true for a new AbeBooks bookseller. (We have added a Seller Since field on listing details.)
The star rating shown on the Web site with search and browse results is based on a bookseller's 6 month completion rate.
A more detailed rating history of the bookseller ratings (The previous 1, 3, 6 and 12 month ratings.) is available through the Book Details page.
From the search results click on the title of the book you're interested in.
Click on the "Bookseller
& Payment Information" tab.
Click on the "Ratings
History" link.
A small window pops up displaying the ratings history for the previous 1, 3, 6 and 12 months.
The ratings for each time period are updated on the 1st and 15th of every month.
Example 1: Today is May 2nd
Current Month: May 1, 2007 May 14 , 2007
Previous 3 Months: Feb 1, 2007 Apr 30, 2007
Previous 6 Months: Nov 1, 2006 Apr 30, 2007
Previous 12 Months: Apr 1, 2006 Apr 30, 2007
Example 2: Today is May 20th.
Current Month: May 15, 2007 May 31, 2007
Previous 3 Months: Feb 15, 2007 May 14, 2007
Previous 6 Months: Nov 15, 2006 May 14, 2007
Previous 12 Months: May 15, 2006 May 14, 2007