Generally all these free guides provided by recruitment agencies are not accurate as they mainly rely on job titles and years of exp which dont really mean much. Some of the range is so wide almost anyone can fit in. For e.g. IT Manger with 6-8 years exp with range of 60 - 110k. Come on virtually any PME job with that kind of exp is within such a big range. Tells you nothing.

My HR friends laugh at all these marketing materials whenever I mention, they told me the only way to get real and accurate data to know how much your job is worth is to buy proper reports from proper management consutancies.