It takes the same work to list a $300,000 home and an $800,000 home. The MLS fields are identical. The TREC contract has the same number of pages. The Texas Seller's Disclosure asks the same 43 questions. The photographer takes the same photos.
A percentage commission charges more for the same work whenever the home is worth more. On a 3 percent listing commission, the seller of the $800,000 home pays $24,000 for the same service the $300,000 seller gets for $9,000. Nothing about the work justifies the difference. Only the model does.
Every other cost in a home sale is fixed or itemized. The title policy follows a published rate schedule. The survey is a quote. The photographer charges a flat rate. The listing commission is the only cost that scales with the value of the asset instead of the work involved.
Fixed-Rate Selling corrects that mismatch. One fixed price for the work. Licensed broker protection for the risk. No percentage taken from your equity at closing.