I had ordered an article of around 1k words. It was a fairly technical keyword and I would imagine fairly hard to write 1k words about. Overall, I am happy with the finished product, especially considering how cheap it was.
When I first recieved the article, I did the usual proof-read and noticed that there were a few small grammatical errors, nothing too bad so just fixed them myself. The keyword that the article was written for contained the numbers "20.5" and as such, needed the density to be high enough to rank for the keyword and the number "20.5". Whilst the majority of the article was correct, the first half often refered to ".5" as the model number, which is incorrect. It was almost as if the article was written by two people.
Overall, I am happy with the article, considering what you pay. Although you MUST proof-read it first and be prepared to fix any errors. At 0.6 per 100 words, it is certainly value for money.
Hope this helps some people that are on the fence.