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Mercury Professional Development, Inc. | Scottsdale, AZ

Meet Our Sandler Team

We strive to be the best at what we do, and help you to do the same.


Mark Kirstein

Mark is the co-owner of Sandler Training by Mercury Professional Development. Mark possesses a unique combination of corporate and entrepreneurial experience, across sales and management roles. For over 15 years, Mark was CEO/General Manager of In-Stat, a Scottsdale-based market research firm with revenues between $5 and $10 Million. He led consulting and analyst organizations that advise and help clients optimize market development. Mark has a BSEE degree from Cal Poly, and an MBA from ASU.

Mark Kirstein Sandler Traning Phoenix


Linc Miller

Linc is the co-owner of Sandler Training by Mercury Professional Development. Linc has spent the last 20+ years of his career in Sales, Management and Business Development and has been a part of the Sandler network since 2000. He has trained over 2000 executives from countries around the world and all over the United States. Linc is a world-class facilitator/trainer and an expert in Coaching, Supervising, Goal Setting, and Mentoring.

Linc is a Graduate of Jacksonville State University and has dedicated himself to giving others the competitive edge to maximize profitability and drive negotiations.  

Linc Miller Sander Sales Training Arizona
Best-Selling Sandler Training Books

Sandler Books

The Sandler library of books includes two Amazon and Wall Street Journal best sellers, as well as the best-selling sales classic for any sales book ever.