You don’t even need cash, just tell tell them to pipe wget to a shell and they’ll do it blindly. With sudo.
It’s amazing how even technically-minded people are willing to do things like copy, paste, and run an arbitrary line of code from a website. A person searches for a solution to some issue they’re having, and will often just blindly use whatever code is handed to them as the answer. I’d be curious to see how hard it would be to trick people into pasting and running something malicious.
Leave aside pipe and wget, a simple copy-paste is sufficient.
Just tell them it’s a MineCraft mod.