The first thing is 3/8 bending ply which should get you around those bends but it is not real smooth, it will have a grain pattern to it. It can be fastened with screws or nails. The second one is 1/4" kerfed mdf. It dose have a smooth face and bends really well. The only drawback to it is fastening it. A screw or a nail will go through in between the kerfs so you need to watch how you fasten it. You could glue with wood glue as long as you have a piece on the floor that also follows the curve.
As for the price, I don't know exactly what it is at this time. We go through Russel Plywood for most of our stuff and I think they will sell to you, it just won't be the same price we get. I haven't looked on the net as to where else you might be able to get it.
Maybe this is more than you'r looking for, but I just thought it might be a different approach. Good luck and keep the pics going.
