I recently commented on another article that there might be a need for this to help those whose first language isn't English.
Just one suggestion, for those taking advantage of the discount, I would do a plagiarism check. You may not want to have your service associated with it, or deal with the fallout if the post goes viral.
Great Idea!
I was just thinking of the same thing. I'm planning on running them through Google as a cursory check. Thanks for the tip! I'd love to help people who might not be as well-behaved with English. It wasn't my first language either, so paying it forward to others really appeals to me.