HAA pay?  

It is centric around three major factors:  How many paying people [pax] the aircraft is loaded with for reimbursement;

The HAA position as a compliment to the retired military pilots who have a [well earned] lifetime retirement.  Most of those guys will work for next to nothing so they can still fly.  That brings the salaries down for everyone.  The operators I have seen don't or won't recognize that although our profession is pretty cool, it is still used to make a living and take care of our families; and

Those operators who believe that piloting their aircraft is somehow an extraordinary privilege, rather than providing the high salary and respect to professional pilots who have worked hard and earned it. 

Been in HAA since the late 80's and not only do operators not pay a livable salary [in most cases] they don't even come close to meeting just the COL adjustments.  The old saying, "I have a stack of resumes' on my desk, so I really don't care if you quit..." is still alive and well.

v/r