I've received an article of 1000 words in exchange for a review.
The article is exactly what I had expected: a well spun very readable text, that of course seems inconsistent in its build-up (because it's paragraph-spun), but it looks real and each sentence taken by its own could have been written by a human.
Plagiarism check comes pretty clean, just a few percent of the text appear elsewhere, which is normal for super-spun articles, grammar and spelling were error-free.
Just the stuff you need for your tiers. And at this price point, you can go ahead and order a handful, and it won't break your bank.