Yep I did read over that and it obviously never made it into the brain. Sorry. Reading it the second time and I now remember thinking to myself as I read it the first time, why would somebody spend that kind of money for a bookshelf that sits on the floor. I guess it fills in the void somewhat from their RS250 (true) bookshelf and the RS750, I believe is the next number, which is almost twice the price.
Now I guess it begs the question, what would they sound like with the full volume of the cabinet available for the drivers? Similar to the M50 I would bet.