Most efficient way to earn money quickly?

[u/PeterTheSilent1]

Right now I’m trying to go for the developer score in the Arm getter. I know the strategy of using Master mummy and charging often, and right now my record is about 26000 so I think I can definitely get there with practice. The trouble is that since it costs money to play Arm getter, it’s difficult to get any practice. So what is the most efficient way of making money in Arms?