I am sure they will sell a lot of them in the US, because there are many Americans who actually believe this stuff.
There was a company several years ago, that sold a CD disc to upgrade your CD player to a DVD player.
Many Americans believed it actually worked! This tells a lot about how the average American citizen thinks
Here is another example: there was a story on the Internet that it was possible to make your Apple iPhone waterproof by downloading a software update. Many Americans believed the story, went ahead in downloading the software, and actually tried to soak their iPhone in water. Of course they all ended up with a broken phone. Some Americans were afterwards even questioning, if they downloaded the proper software.
In Europe, nobody buys stories like this! Even people without a university degree, or even without a high school degree... because even those people are smart enough to judge that stories like this are bullshit.
Is there such a big difference in education or average intelligence between Europe and the US?
I can't believe that there are actually people out there that believe stories like this.
Even a kid in primary school will most likely not believe this stuff.