Well, hopefully, now self published authors can now see that there are a lot of AMAZING editors who can do outstanding work for a LOT cheaper than that list. As for the free editing sample, yeah – so long as the editor has solid proof that they are a legit editor with great credentials, that’s all you need. But if they don’t have that and won’t provide a free sample edit, then there are a lot of fish in the sea and it’s best to move on.
Obviously there is a big difference. I actually started with screenplays (with some mild success) partly due to hearing that as long as you have a good story, the grammatical errors won’t be a big deal. Well, that was not true. Maybe if a producer liked the story or I was already established but every contest I entered always came back with feedback about the grammatical errors. Even if I won or placed as a finalist, I always received critique on that. Very little is spelling error, it was more about structure, etc.