They are worth it if they get you call back & interviews.  There are a number of quality firms out there that provide this type of service.  Go to the Top quality Services tab for a list of quality & screened resume writers.  Below I will give you a few:

For a Free critique and price quote from one of the most respected firms in the industry, Click Here to send an email with your resume as an attachment 

E-Resume.net — A top quality provider of resume writing services!

Essay Edge — The New York Times has called EssayEdge "the world's premier application essay editing service" and ResumeEdge.com powers the resume services of The Wall Street Journal and SallieMae. After joining, access 500+ pages of free resume, admissions essay, and term paper help content for use on your site.

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