I think the most important lesson here is buried deep into the article - "Mr. Brücker was never disdainful of customers - in fact, he championed the need for better, more thoughtful service that makes the customer sense caring and quality - the stuff of luxury.

"You’re selling pure emotion," he said."

The rest is tips and tricks - interesting and useful perhaps, but by focusing on them the article comes across as scummy sales instead of the ongoing relationship that is essential (and very profitable!) in the $35,000 Watch market.