… and even then MAP isn’t enforceable, seeing as how it is basically price fixing, which is illegal.

MAP agreements typically don’t say anything about the selling price, they more typically govern marketing funds provided by the manufacturer. So, for example, Logitech might give my computer store $1,000 to feature their new mouse in my weekly newspaper circular, but only as long as I stick to MAP guidelines. If I don’t, they’ll rescind the advertising credit.