As a natural skeptic I soon became convinced!
As a natural skeptic, I initially used the free trial to generate an ebook. It returned with excellent work but was unfinished. I sent an email Stefan with loads of questions which he quickly answered to my satisfaction. I bought a Lifetime subscription the next day. I have now generated 6 ebooks, and four are already on Amazon KDP. There is no better AI ebook generator on the market. I'm beyond pleased.