I have to ask, but I assume copies are free; because teaching that skill ain't.

I'm sure Dr. Michael Down, the author, doesn't mind... Despite the notice in the bottom paragraph.

I will ask him. He is the chair of the economics dpartment in the college of social scieneces. I am working as a GA in the business college. After talking to a couple students it is clear that principle economics is required, but not taken serious.