MAP is very common in my industry. The gripe I have is the Manufacturers selectively enforce it. They call us, and tell us to raise our price. We show them Google Shopping where the entire first two pages are below map. Their answer is we need to raise our price. We comply and sales drops to literally $0. Then they call as and wonder why we are not selling their products. If it was just one manufacturer I wouldn't be upset, but when you have 5-6 playing the same game it pisses me off.
I'd love to sue the manufacturer for it somehow. I'm all for MAP, but it needs to be enforced across the board.