How about, less than what many people pay for a tank of gas?
Most people won't do it, but they don't have to, and it's not a particularly expensive hobby.
In the US. How about in Kenya or Laos? Plenty of places where $30/month is closer to “median monthly income” than “an expense you’d barely notice”.
In the US. How about in Kenya or Laos? Plenty of places where $30/month is closer to “median monthly income” than “an expense you’d barely notice”.