Your prices are really high for systems that are partly public.
People who bought these systems never said that is was not worth it.
All prices are based on code quality and the fact that all systems were tested on live and big servers.
I would never compare my systems to these public ones.
Moreover, I would never ever try to even use those systems.
Ok can you please share a couple of lines from you previous system Bitte melden Sie sich an, um diesen Link zu sehen.
really interested in how you build it - I bet you literally just create a GUI for an already existing system. Maybe i'm wrong.