How much do male webcam models make?

It is difficult to really answer your question properly because being a webcam model is really the same as any other job. The money you make depends on the effort you put into it. The really good, popular models that have amassed a substantial fan base make easily 3k-5k each week. But that doesn't come overnight. You will get some traffic from the site you sign up with, but to make serious money you will need to campaign for yourself and drive your own traffic to the site. It also depends on what site you are on, because many of them take as much as 50% of your earnings.