Just bought one on eBay with "buy it now", $350 delivered for a 6ft wide by 4ft long 120lb drag harrow. Came UPS about 6 days after payment. Interesting packing job for shipping.
Does what I wanted. Smooths the sand in the 60 ft ring I made for my wife to lung the horses. I'm clearing woods for the pasture. I wanted the harrow to follow the contours of the land rather then a box blade or your rake with a ridged edge. With a couple of logs for weight on top the drag is helping to smooth the contours well mixing in old hay, manure, and wood chips from the chipper. My MF 1540 could easily handle something bigger but this is the right size for my current needs to maneuver around trees and tree stumps still in the pasture.
When done I can load it in the bucket with just the pull bar hanging over on one end.