Noam,
You misunderstood me. I am not advocating installing the kit unless someone indeed has a problem with signals coming in over their powerline. I was just trying to point out that the kit will not only help with a smart meter, but it will also help block signals coming in from other sources too.
Since I don't make the clamp-on filters or the XPNR, I get very little out of making it available. The filters are not available through a distributor, and they cost about $15 each with shipping in a lot of 20 (the smallest quantity they sell).
Jeff