Content Writing – Is it still possible to sell high

Hi everyone from digital forum,
I have read almost all of the thread in copywriting in this forum.
There is some thread saying it is impossible to earn much selling content here.
And I also saw other posts on content writing. It is true the majority people here sell $3-$5 for 500 words article.
Yet, I have seen people trying to charge up to $20 for 500 words article. Some even more.
For those charging so high for those article, can I have your advice?
How do you do it?

See original post by Melisa455