[Cinisajoy]

I guess the main thing for a writer to do is know their target audience.
Fifty Shades of Grey was read by millions. The literary folks had a field day with it. They complained of bad grammar etc. The problem was not with the grammar. Every sentence was flawless. The problem was the writing was very simplistic. It was very easy reading and the story itself flowed very well. It was read by millions and made into a movie.

Full disclosure: I haven't read all of it because of the nature of the book.
The author really needed to do a lot more research.

Editing to put the title in. Though Jon's guess could fit too.