As for what I expect of them when they can't afford it is this, choose very wisely the shows that we accept. That is all.
But that's my point, you are already $5200 down this rabbit hole. Might as well invest another $80 in AAA to alleviate this potential problem. Like another posted said, this van is costing you gigs instead of gaining you gigs, which I imagine was the point of you buying it in the first place, to be able to haul equipment to gigs.
I work for a living too, and we all have financial limitations, but you have opened this door. It seems foolish to me, if breaking down is a major concern, not to buy some sort of tow insurance.
I'm not trying to criticize you, I've been in a band before where I was the only one with a "real" job. I get it.
I wish you the best.