> But in both cases, I don't see why the value they provide changes based on the value of the home. Some of them might change based on the size of the home or p

> But in both cases, I don't see why the value they provide changes based on the value of the home. Some of them might change based on the size of the home or property, but not the home value. It’s pretty simple, more expensive homes are less liquid and take significantly longer to sell, because there are fewer people with deep enough pockets to buy them. This equates to more effort in actually finding a buyer. A $20 million dollar home may be on the market for years before it gets sold. I’m guessing that if just one side of the deal was getting a % of the value, there would be a significant imbalance between the sellers and buyers agents, in terms of effort, which is something that you don’t want as a buyer.