To 20K a pop? I'm no expert but I just can't see how that's possible. The design wouldn't vary much from place to place, so can be a once-off generic design with slight modifications. Can't imagine the materials are terribly expensive but even so, if they instiall several at the same go, economies of scale will bring that and the other expenses down a lot. And as I've said, if the capitals of the fmr Eastern bloc seem able to afford it, why can't we?Design, purchase of materials, manufacture, delivery, installation - it all adds up.