It costs the amount you earned in the time it took to read this.
Use this: if you want the functionality of an e-book and the cost of AN ACTUAL BOOK. Seriously, you could pay more for a coffee table book than this elaborate piece of machinery.
Don't use this: in our office building, or you'll receive many an askance look.
This product tells the world: "I'm as frugal as John Wemmick (a reference you would understand if you read as much as I do)."
In 99.9% of uses, this doesn't: suck you into a real-life version of the tale you're reading, whisking you into a perilous adventure. Unfortunately.
Legend has that when the moon is full, this product transforms into: Kobo Cujo