Even though the written price has gone up I'd bet a pair can still be had for the intro price. The Soul's sloped side cabinet is more expensive to manufacture but the drivers look the same except for their reversed position. Wouldn't be surprised if some of the more expensive and harder to mass produce models are phased out.

I'm really smitten with these puppies and the sound keeps getting better. I've uploaded some pictures of the Zu's in my gallery.