Thanks for sharing. I just checked it out. Here is what impresses me about their service even more than their credentials:
A three-step editorial process (see more below) includes a preliminary story premise and plot review, a core manuscript development review, and finally, significant follow-up review of the manuscript rewrite. Why? Because there is rarely any such thing as one-shot manuscript editing that results directly in commercial publication. Follow-up reviews are mandatory from our standpoint, especially if we plan on moving successfully toward the querying process.
Six years ago I submitted a poorly written mystery novel manuscript to an editorial service called Iowa Book Editors or Doctors or something like that. They praised the ms ahead of time and I didn't know how bad it really was until I attended a workshop at Tin House over a year later. The Iowa editors did the best they could with if after flattering me into believing it had lots of potential. I was out a few thousand, sent the manuscript to 40 or so agents and bombed.
Even if the Iowa editors hadn't lied to me about the quality of the novel, there is still no way they could have had the monster ready for publication after only one review.