Many many year ago a publisher published two editions of the same text:
.......the college edition with a binding that would only last for about a
semester and the High School AP edition -- which was bound (sorry) to last a
little longer. Why? School dstricts buy books for use over a period of 5 - 10
years. It was "unethical?" for college bookstores to sell the HS version!!!
(THE ONLY DIFFERENCE WAS THE BINDING.)
as mentioned in the previous posts --- some of us may still be cynical for
good reasons!
jim ealy
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Packer Collegiate Institute
Brooklyn, NY USA