SKC
The only advice I can give you is that it is a policy of this BB that job offers or requests for PJE pilots that aren't accompanied by appropriate recompense, that is they (the pilots) are properly paid for their professional services will not be tolerated.
Further there are a set of rules for parachute orgs and for the operations and pilots carrying them.
A professional will abide by them, without exception
Good luck, if they wont pay you don't need the work that badly. The jumpers pay!