You only gig a couple times a month? How many times do you rehearse a month????
Think about it. If you average $100 per man per gig that's $200 a month. $67 is a THIRD of that! Plus, if you are rehearsing at least once a week, there's the cost of getting to and from every rehearsal.
Not picking on you, OP. But you and your three buddies never had a band. You have a hobby. You are breaking even at best not even counting the hours you are putting in to this thing. In fact, I would bet that if you include travel time to gigs, travel to and from rehearsals, rehearsal time, practice at home time and gig time you are probably making about a buck an hour if anything.
Yes, I'm making a TON OF assumptions. I'm probably incorrect on a couple points. But it doesn't seem like a money maker for anybody.
Be up front with the next guy about how much you expect they will earn and what the costs are. Unless you guys are making a lot more at gigs than I think you are, your members don't net $100 a month, and probably a lot less than that.
I probably would have backed out too....not via text mind you.