Or the schools copies become worn and need physical replacement. All pbooks do eventually show signs of wear after all.
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Originally Posted by wyndslash
in terms of textbook prices, i think most are just rip-offs. they keep coming out with new editions every year, and they're all the same content. they just switch the chapters around and update the examples, but that's all. our profs usually just tell us to stick with the old edition unless a significant amount of time has passed enough that the amount of new content becomes substantial.
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