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The 'value of the book set' will depend on the 'need' of the individual, i.e. student, business manager, etc. However, this is a good collection of the key academic Harvard Business Reviews located in one source and is a good reference set.
As any modern student or professional will be aware of, most academic institutions provide internet access to databases (e.g. EBSCO, etc) that will hold the collection of essential reading for their courses/work - so there is no real driver for purchasing the books, with the exception that the key subject matter are conveniently located in one box set.
Based on the key essential readings co-located in a convenient box-set, I would recommend.
With a caveat on humility, these books provide a credible assumptive foundation for a number of dynamic disciplines. Whether dipping in to gain a specific insight or storming, the quality of the material the set provides, can represent a valuable return on investment.
Great starter kit. There's a few books I've picked up a few times, a few I didn't want to read originally but then discovered their use... Buy this, and complete the series based on your needs as you work through your career.
Was expecting something great from HBR. But I guess times have changed. With so much information already coming from every quarter and with so much dynamism in this field, this set was a let down. It's probably good for students in 10+2 who would like to get some primer before entering graduate school.