The mount's fabricated from steel plate and 2 sizes of aluminum angle, with a piece of chipboard between the seat and the steel plate (to stiffen it up). Not sure what these seats cost nowó under $25 a few years back.[/quote]
I got a couple of these from wallmart and they shipped them to the neighborhood store for free and called me to come pick them up, 22 bucks each. I also got the low back seat with the steel frame from a tractor store online but without the drain hole and black and I paid less than half the NRS price.