Only 1.5 percent of the purchase price goes directly into your agent’s pocket.
So on the sale of your $300,000 house, her personal take of the $18,000 commission is $4,500… Not bad, you say. But what if the house was actually worth more than $300,000? What if, with a little more effort and patience and a few more newspaper ads, she could have sold it for $310,000? After the commission, that puts an additional $9,400 in your pocket. But the agent’s additional share — her personal 1.5 percent of the extra $10,000 — is a mere $150…
It turns out that a real-estate agent keeps her own home on the market an average of ten days longer and sells it for an extra 3-plus percent, or $10,000 on a $300,000 house. When she sells her own house, an agent holds out for the best offer; when she sells yours, she encourages you to take the first decent offer that comes along. Like a stockbroker churning commissions, she wants to make deals and to make them fast. Why not? Her share of a better offer — $150 — is too puny an incentive to encourage her to do otherwise.
Excerpt from: Super Thinking: The Big Book of Mental Models by Gabriel Weinberg and Lauren McCann