I am writing a book for my course on business and government for senior bus econ majors at Indiana University. Comments are welcomed. I am thinking about self-publishing and charging a relatively low price for electronic or paper copies--- something on the order of $20 each. The chapters are already drafted, with homework problems with answers, but I think it needs more work and so have not publicized it yet.
Quiz and test answers are in the directory http://rasmusen.org/g406/tests/.