I have no experience with PA, but from a 3rd party POV it seems a lot of PA Managers and Directors here have a very strange view of what the markets outside are paying for Managers and Directors...

Manager at 4k and Director at 6k/7k is definitely not the norm outside. In many companies 7k will not even qualify as Manager much less Director. It seems that some people working in PA think the pay is very generous and in excess of their job scope!? And we even have people drawing 4k think they are GM...Weird...