I like you question because I can say NO. It does not work for everybody. I could work for every sighted literate person, but it doesn't. Not everybody who could swim and goes into the water acquires that skill. There are things a person must do to acquire a skill.
Reading the PR book or taking the course or seminar alone is not enough. You must take the knowledge and use it. Some get the system to work more quickly than others.
I suspect that every language with a written form can be used with the system.
Learning the material is not normally the difficult part. Acquiring the PR ability often takes longer. I know of some that get very good success the first time the use the system. Many I suspect don't stay with it long enough, or more likely, don't have the correct attitude or beliefs to allow it to work for them.
The cost of a book is all you need to learn the system. Or the cost of a library card.
You can contact LSC to find out about availability in other languages and world distribution. Go the the home page and find the contact information.
Sending love,
Iam2 
