A good artist is just as expensive as a good programmer. Commissioning art is expensive. Outsourcing to third world countries is cheaper (just like programming!).
But if you want a finished artwork, chances are it's going to take an amount of time worth $50-150.
If you want a finished (nontrivial) program, chances are it's going to take at least an order of magnitude more than that.
> A good artist is just as expensive as a good programmer.
Let's look at industry, and just go look at what video game artists make compared to programmers with a similar amount of experience. Now, are you just claiming that they just aren't very good artists, so they aren't paid well? Because I've seen their work, and its not shabby at all.