Why are people not buying the course? Mainly because most of gamblers think they are experts in gambling and buying this course won't help.
Where do you see the OP is asking for money for the poker course?
If you see the OP, he is offering to help for free. By the way, you can also find a lot of free material on YouTube regarding Poker, so even if OP is not active, you can still learn from other sources.
As a poker player, I am offering help on how to get started and start crushing the micros for free.