Well, I haven't actually seen it yet, but the general idea is you install a cylinder on the heavy-duty LandPride 3572 blade (it angles and tilts) and control the side to side movement from the seat. When it arrives I'll post some pics.
As for the cost, you're asking the wrong person. Part of doing business with Mr Carver is not disclosing prices. Even if I felt that practice was 100% marketing hype, I gave my word...
So ask Steve, okay?
Pete