My understanding is that the agreements in the US are typically regarding 'advertised price' rather than actual sales price. So, the dealer can't advertise or 'list' the product for less than the MSRP or will risk losing the product line, but there isn't actually any limitation on what they actually sell for. IMHO this arrangement for the most part helps everyone to some degree - you actually have to engage directly with a dealer to get any form of discount, which helps to protect to a degree against online sales.
Of course, it's been ages since I've actually been to a brick-and-morter dealer, so I could we way off base.
Yeah, my local high-end boutique gives a 10% "friend of the store" discount, but I can't remember how much I had to spend before I was considered a "friend of the store". I think it was only that I bought a lot of records from them. But I also had upgrade-itis pretty bad, so I'm sure they were happy to see my coming.