What's the big deal about this book? Wikipedia states that it can be found on eBay for upwards of $1,000 a copy. I searched and yeah, it's not cheap! So what's so great about this book? I actually have it in e-book version. I mean it's written in 1990, before the boom of the 90s and the crash of 2000, is the information in the book still relevant? What makes it worth over $700? Or is it a collectors item?