This is Our Story

Our Mission

We strive to provide a cost-effective, unique and powerful tracking and analysis service that provides timely and valuable sales related information to help customers from a diverse range of backgrounds succeed.

In addition, we also provide free tools, information and software to help track, promote & sell products through Amazon.


David Mercer is a well known author of software development and programming books.

He has completed several acclaimed titles in open source web development, writing on technologies such as Drupal and osCommerce. His works have been published and sold globally and translated into many languages including French, Japanese, German, Spanish, Greek and Polish.

It was after the publication of his first solo title that RT500 was created in an effort to keep track of how the book was performing. Since then he has overseen much of RT500's development and continues to manage the site today.

Our History

RT500 began, in 2006, as a small PHP script that queried Amazon on an hourly basis. Within a few months, a basic tracking and graphing service was released to the public. By the end of 2007, RT500 had a built in sales estimation engine, a reporting and alert service as well as several free tools for researching product information on Amazon.

After a redesign of the user interface in 2008, along with the addition of several powerful new features, RT500 began to attract a small community of regular clients. With a burgeoning community came new suggestions and feature requests and the pace of development and refinement of the service quickened.

By early 2009, RT500 was attracting as many new customers in a month as it did in all of its first year of operation. A community network service for members was added along with a suite of free tracking and promotion widgets.

With more than a thousand published authors, publishers, editors, celebrities, manufacturers and business leaders utilizing RT500 each day, and traffic volumes that double every quarter, RT500 is set to grow into the de facto tracking and analysis service for the publishing and online retailing industries.

RT500 Enterprise

By 2014, with a growing base of corporate clients, RT500 decided to split their offering into retail and enterprise versions. RT500 Enterprise offers flexibility and power in managing larger volumes of subscriptions using a flat fee structure.

In addition, the enterprise version also has new features and functionality to bring power and insight to its business customers.