Karen Green: How Do You Sell More by Knowing the Buyer?

Karen Green is a sales consultant, former retail buyer, and author of Buyology: Know Your Buyer, Sell More and Sell Better, and we spoke about how understanding buyer behavior can dramatically improve sales outcomes. After sitting on both sides of the table — buying for major UK retailers like Boots and Tesco and later selling into them — she developed a structured approach to decode what truly drives purchasing decisions.

Her core method, the Biology Model, is a three-pillar framework that examines the company, the individual buyer, and the relationship between them. Too many sellers stop at surface-level research, but Karen argues that real advantage comes from deeper analysis: understanding what you can change, what you cannot, and how to adapt your message accordingly. As she puts it, “it’s actually getting into it a little bit more deeply — the biology… the study of buying.”

A major turning point in her work came from recognizing how irrational business decisions often are. Research shows that “95% of B2B buyers make decisions based on emotion,” even in highly structured tenders where pricing and criteria appear identical. The difference often comes down to what she calls “that little element… the magic dust” that makes one provider feel right.

Karen translates this insight into practical execution. Sellers must modify communication based on personality, adjust positioning when corporate constraints cannot change, and clearly articulate their unique value — especially in crowded markets. She also stresses that rapport remains a competitive edge in an AI-heavy world: “Meet someone, phone them. Try not to do email because the moment you do email you take out all the emotion.”

For founders and growth-focused leaders, her process is intentionally fast and results-oriented — combining personality profiling, 360-degree feedback, and structured planning to help clients achieve promotions, accelerate revenue, or reposition their businesses within months rather than years.

This conversation offers a practical blueprint for selling more effectively by understanding how people actually decide — not how we assume they do.

Key takeaways

Analyze the company, buyer, and relationship before crafting your sales message.Identify what cannot change — then adapt your positioning.Remember: 95% of B2B decisions are emotional.Tailor communication style to the buyer’s personality.Clarify your unique value in crowded markets.Prioritize meetings or calls; email strips emotional connection.