@WW from what I've read around here, it seems that hiring editors seem to be quite costly (and for good reason. My sister teaches IELTS and I pity her for all those essays and conversations she has to correct. I can only imagine what a real editor goes through) but they could always ask for a beta to look over their work. It's better than nothing. I do admit that grammar makes me hesitate to purchase some indie authors I've been eyeing (sp) for some time now.
And while we're on the subject of grammar, I wasn't aware that the phrase "waiting on" was correct. English isn't my first language (though I'm better at it than my mother tongue). I've been seeing this phrase used a lot more often recently and I wonder why people won't just use "waiting for". An explanation would be great