In it for the money?!

This was something that was brought up last night at the Ferry Plantation Friday Night Frights event and I just wanted to reiterate here for those that couldn't make it out.

Lately I have been seeing more instances of Paranormal groups charging for a portion of, or all of, their service. I am wondering why do this if your intention is to help others understand what is going on in their home and/or place of business?

Is this the only source of income? Is it a for profit business?  Does everything come with a price now? Is money so tight that you feel you must charge your client in an effort to recoup what you spent on gas, food, lodging, equipment, etc?