Really. Should someone looking for a writing seller have to ask for the work to be error-free in the buyer request? You would think that would be obvious. Unless people want content that is littered with errors. What does this say about expectations these buyers have?
Also, enough with asking for native English speakers. So you want native Americans to write for you because they are the natives of the U.S.
I know many non-U.S. based writers who are excellent.
That is my rant.