Seventy-five dollars online! NINETY dollars online! Out-Of-Print! Blah, blah, blah!
My wife found one on Craigslist for less than 4 bucks. Plus shipping and the money order, less than nine. And this one isn't all stuck together.
I could give you a full review of the thing, but I won't -- I'll just skip to the bottom line. Whether you play Trek or not, this is a book that belongs on your shelf. Hands-down, this is as good a book about GMing as you will ever find. Each page is crammed with practical advice on the design and execution of game scenarios -- and you can absorb it all in one afternoon.
It even comes with a fully-developed adventure. I will confess to not having read the whole thing yet, but I can tell already that it applies some of the scenario design advice presented in the main section of the book, so you have an example of what your new tools can do. (Hey, S John -- Forbidden Planet, right?)
Get it. Go. Now. NOW. If I could afford the lawyer, I'd buy it back from Wizards.