For just 50 euros for the complete set you can not complain. The installation was as fiddly as time-consuming. And I do not mean just when trimming the steel cables, especially the installation of the guides on the fabric is really exciting. Miniscrews need to be turned into small Plastikschnipel. This is really annoying. But the result is quite satisfactory but still!
Conclusion: The same system with other guides = 5 stars!