If you're a college student, you're probably familiar with this kind of math question:
If a 16GB Wifi-only iPad costs $500, and a student spends $1,000 per year on printed textbooks while recouping 16 percent on the sellback, and an e-textbook costs 60 percent less than a printed textbook but lacks sellback, and only 32 percent of a college's textbooks are e-textbooks, how long before the iPad pays for itself?
Answer: It'll take you around three-and-a-half years to recoup the cost of the iPad solely from e-textbook savings.
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Bootstrapper’s Guide to the Mobile Web
Engage!: The Complete Guide for Brands and Businesses to Build, Cultivate, and Measure Success in the New Web, Revised and Updated
