I will repeat a favorite horror story. An online acquaintance at another site, a man whose native language was not English, self-published a book and linked to it on Amazon. I clicked and used the Look Inside feature and was dismayed to see it had a lot of really bad mistakes in the part potential buyers could read. This wasn't subtle stuff people might not notice but sentences like Smith is been to Space and On the way to red blue planet Smith went into comma and woke in universal astro mind.
The author was not a friend, but I felt bad for him, putting up such a poor showing. I private messaged him suggesting the English wasn't what it could or should be and urging him to take it down, get professional edits, and put it up again.
Here's the horror part. He'd paid for professional edits. He'd even found someone who worked at a bargain price.
Maryn, appalled