I've just gotten a review copy of $1/100 words package which consisted of 505 words niche researched content.
The content was indeed researched but not "Well Researched" ... maybe this comes with the premium package which I will surely try to see the difference (or could be the niche).
Some sentences didn't make much sense but I didn't bother sending the article back for revision, which I am sure he would gladly correct it.
It took me about 10m to read and fix it up to make it up to my standard but for the price, you are getting solid content which with some quick fixes, can be used for money site or without fixes for web 2.0 use case.
Will report back what will come out of the premium rate.