Bill, I hate to burst your bubble but look under the seat, on the seat base you'll notice "SDG". The Moose is made by SDG but lists for $89. I put the tall seat on my 520 and love it. I didn't need the tall but I figured more padding wouldn't hurt, and it makes it a little easier to transition from sitting to standing. Great product. I've heard a couple people complain about getting new Moose seats with the threads already fraying. Quality control problems I guess. I had my shop order it directly from Moose and I got my discount as well. Can't beat a complete seat for under $80.