You need to clarify with the leader, if you have not done so already, that each performer in the band, including the leader is getting an even cut of the receipts, after any expenses (promo, gas, production) if you have any expenses. If it is unclear, or if you haven't asked before, the leader should be able to disclose exactly what the gross income per gig is, what expenses are associated with the gig, and how the money is being distributed. If the leader cannot or will not disclose this information then you are not a band member, you are a sideman, and therefore should dictate your pay requirements. Assuming that it is an even split among all performers, if you are doing "door gigs" you won't know the money situation until after the gig. If you are doing your own sound and lights at these door gigs and, the band is only getting a cut of the door receipts, then you are getting ripped off already.