On another site I was hired to ghostwrite a book for an author from the UK. I explained the plot and the characters, the locale (It would take place in the British Midlands), the main characters' livelihoods (one was on the faculty of a university, the other worked on an assembly line). The author's own execrable writing was done in British English. I wrote in British English and hired an editor who lived in the Midlands so the vocabulary and customs could be checked as well as the writing. She rejected the manuscript.
"I didn't expect it to be written in British English."
You can't make this stuff up.