Reference: De Koperwiek Terschelling – Management of Retail & Cross-selling
I provided on-site classroom sales training for the two salespeople at De Koperwiek in Midsland. In a specialty store that sells everything from pet supplies to garden maintenance, consultative selling is the foundation. My task was to restore discipline on the shop floor: no passive attitude, but actively guiding the customer to the best solution.
During these sessions, we applied the 12 sales techniques to De Koperwiek's wide range of products. We utilized the 11 scientific topics of influence to turn a 'standalone sale' into a complete package. Sales is a science : someone buying a barbecue also needs tools and fuel. Someone coming for a dog needs advice on the best food. With razor-sharp Logic Selling (Spin Selling), the salespeople learned to plug every commercial leak by asking the right questions.
The result for De Koperwiek is a team that advises with more authority and enthusiasm. The salesperson is now in control, causing the average transaction value to rise and ensuring the customer leaves the store with comprehensive and expert advice. By taking my sales training , sales on Terschelling are no longer a matter of chance, but a result-oriented system.
30+ Years
Expertise in sales psychology and results-oriented methodology.
2.000+
Sales professionals trained to a measurably higher level.
400+
Helping organizations achieve structural revenue growth and returns.
4.9 ★ + 9,2 ★
Winner: Best sales trainer in the Netherlands (Google & Springest reviews).
Over 400 organizations have gone before you.
View all
Sales Insights: Learn from 30 years of sales experience
Read my latest insights on selling, sales, and commercial results.
View blog
Sales Insights
Sales training or sales coaching: what do you need and when?
Sales training and sales coaching are not the same thing and are too often used interchangeably. Graham Hulsebos, best sales trainer in the Netherlands 2025, explains what the difference is, when to choose which and why the combination gives the stro...
Read: Sales training or sales coaching: what do you need and when?
Sales Insights
Best Training Provider
On Thursday, February 19th, 2026, Graham Hulsebos was officially named the Best Training Provider in the Netherlands for Sales. This prestigious award was won by achieving the highest average student rating on the independent platforms Archipel and S...
Read: Best Training Provider
Sales Insights
Graham, how come Google ranks you number 1 as the best sales trainer?
Google's Number 1 Guest on The Sales Podcast
Cesar van der Linden opened the conversation right away: "Graham, why does Google rank you number 1 for consultative selling?"
The answer is control within the sales cycle. True sales power lies in askin...
Sales Insights
Graham Hulsebos officially nominated for 'Best Trainer in the Netherlands 2025'
Graham Hulsebos Sales Training has received a prestigious nomination for Best Trainer in the Netherlands 2025. This national recognition by Springest and Archipel Academy underscores the impact of Graham's unique sales philosophy: "Selling is Asking,...
Read: Graham Hulsebos officially nominated for 'Best Trainer in the Netherlands 2025'
Sales Insights
Why 90% of Salespeople Don’t Use Sales Techniques (And How It Hurts Revenue)
Most salespeople across virtually every industry fail to use professional sales techniques. This article explains why 90% of all sellers rely on guesswork rather than structured sales methods, what this costs businesses in lost revenue, and how moder...
Read: Why 90% of Salespeople Don’t Use Sales Techniques (And How It Hurts Revenue)