You are missing my point, Eric. I am interested in the Kubota blade. I have the same question posted on mytractorforum, because I would like to see a photo of one. The responses that I have gotten are that they are not the heaviest made blades, but not light duty, either. A $160 blade has to have some compromises somewhere- if this Kubota blade is built for at least medium duty, then I think it will work well for $200. Northern Tools also has an inexpensive blade, but I have no doubt that it is a light duty unit, which I suspect the one at Agri Supply is, too.
I would rather spend a little too much on a well built blade, than save some money on a marginal one. And, I do have a diesel, which gets 20+ mpg, which I think is pretty good- by the time I drive to Petersburg and buy the $160 plus tax blade, and add in fuel, then I will be over the $200 mark.
Unless someone chimes in and says that the Kubota blades are junk, then I am leaning that way. I just want to see what one looks like, and how it's built.