This link that you provided (
www.narayana-verlag.com/Forbidden-Health-English-version-Andreas-Ludwig-Kalcker/b29116
) charges $26.90 for the book and $41.50 for shipping to the USA which is absurd and a complete ripoff. The mainstream book sellers such as Amazon, Barnes & Noble, etc. have censored Forbidden Health because they deem it as misinformation. So, it may be possible to buy the book at an exorbitant price from price-gougers but that's because it's effectively censored by the mainstream. It appears that the book is so effectively banned in the USA that buying off-shore with sky-high shipping costs is the only way to get it.
Perhaps you haven't heard of problems with the Clean Hands copies but I and others certainly have, so buyer beware. There are PDFs of the book available for those who refuse to be ripped off by unscrupulous price-gougers who are taking advantage of mainstream book banning or to pay outrageous international shipping costs. I'm all for supporting the author, but only within reason. My heart goes out to Klacker and other censored scientists who are muzzled by evil predators who fear truth.