No Room to Maneuver

There must actually be room above the commission for this to hold true.

The Market Sets the Price

Supply and demand set the value, not the broker.

Circular Reasoning

Justifying the fee by a gain it supposedly produces.

Selection Bias

Properties with brokers are often already better positioned.

Conflict of Interest

The broker directly benefits from a higher sale price.

Real Net Cost

Even with a higher price, the seller pays more in commission.