How much does the Camino de Santiago cost?

The question was:

I am looking to the camino frances this summer, not sure when exactly. i was just wondering what kind of cost am i looking at in general. how much would i be spending on accomodation and how much on food. is it possible to camp in places along the way?

This is a very common question, that many have asked. Here is one on How much the Camino de Santiago Cost to walk.