Approximately what percent of post-tax income and how many Big Macs could that buy in your area? (No fair counting your union dues haha)

Been thinking about it since I suggested a techbro user tithe 10% of his earnings to a local org earlier today. Thinking about how much my org could get done if we had a couple (or even one) techbro interested in clearing their conscience with a 10% tithe.

On the other end of the spectrum one of the organizers I support asks members to donate 0.1% of their post-tax income. I think it's noteworthy because nominally it sounds like such an achievable target that most people would struggle to argue they couldn't afford.

Me: a little more than 1% of my post-tax income, spread across three orgs - mostly going to mutual aid. It would buy 9-10 Big Macs here.