I had availed this service thanks to the reward system of GMATClub. The service includes 1 round of review & feedback. However, if you have any questions or need clarification on any of the comments you receive, VP is happy to follow-up and answer them.
I was asked to submit my resume and an accompanying document with any notes, background information which could be useful for them to review my resume. I had also sent specific questions which I wanted them to address.
The review took just three days. The resume was transformed into a more action based. Most of the bullet points were edited or had some review comments. The end result was that the resume became more crisp and concise.
Also, all the questions that I sent via mail were answered.
I would recommend this service to anyone willing to have his review reviewed. Please remember that resume is the most underrated part of the application. However, it is as important as the essays.