Around the middle of February, I started playing with a second band. They were without a bass player (their old one left), and I offered to help them out with shows while they look for a new one. They still have not found a new bass player, and I don't think they're looking too hard. Thing is, they seem to be starting to view me as a regular member. Now as far as I am concerned, this is not my band. I don't make decisions, I play what I am asked, and while I'm pretty free to mess with the parts, I don't contribute with any songwriting. I go to practice every week, so forth and so on. Here is my question: I have played two shows with them so far, and have another on May 17. The first show I know they got paid around $180, and the second one probably between $50 and $100. Neither time did they offer to give me my cut of the money, and instead used it to pay rent on their practice space or fund the album which they are recording, and which they have asked me to do the bass parts for. Should I be expecting 25% of all money from playing out? I haven't asked for any, but they haven't offered either. I don't want to be an ass, but I kind of feel like I am being taken advantage of.