here are 5 reasons why dimmer switches are so expensive

Special components: They have special components that allow them to dim lights.

Limited demand: Not many people need them, so there's not a lot of competition to drive down prices

Complex technology: They use complex technology that's expensive to manufacture.

Installation costs: They can be difficult to install, which adds to the cost.

Brand name: Some dimmer switches are made by well-known brands, which can drive up the price.