Where'd you find those Amiga? My printed pool was just from a Meijer (supermarket, big box style). The hard plastic ones I found a typical grocery store, but I did also see them at a hardware. I think they are pretty pricey considering what that they are plastic. Perhaps the manufacture of them dictates the price. As for cleaning, once a week or so I just go over them with a stiff bristle brush and spray out.