Cost is my main issue when it comes to professional copy editing. A thorough job costs a lot, and a basic spelling-and-grammar check I can do myself, no point paying for that. I've been working professionally as a tech writer and editor for years, so I do have experience in editing my own work. <--- That said, I'm well aware that I could do with a good editor for my work. That's a whole different ballpark from checking basic facts and spelling. And as a kind reader pointed out to me a couple of days ago, one of my characters went from blue to orange in the space of a chapter...
