It's illegal for various sellers of a particular product to actually enter into an agreement to fix prices above what the market would normally support, but it's not illegal for a manufacturer to say that dealers of their product must charge at least a certain amount for specific items. My wife and I were in the market for a new washer and dryer recently and more than one store told us that the prices on the models we were looking at (the Neptunes, I think?) were set by the manufacturer so they weren't affected by sales and would be the same everywhere. I checked about 20 different places and they were right.