Those of you *not* familiar with Robert Asprin: this is not the book to start with. It is not his best writing, and simply does not do his hilarious series credit. If you're an Asprin first-timer, buy Another Fine Myth - it's cheaper, makes more sense (since it's his first one) and is better.
For those of you who do know the series, I'd say read it (though perhaps when it gets a bit cheaper) and then make up your own mind. Perhaps I'm being overly harsh, but it's just *not his style*. Apparently he had a gap of seven years between this and his last in the series of books, but it sounds more like seventy. Gone is his witty narrative, playful banter and gripping descriptions - the landscape and characters are sterile, and it's just not funny. In short, it looks to me like a book by me if I was trying (unsucessfully) to emulate his style.
I have not read the next book he wrote in the series, "Something Myth Inc.", but I hope beyond hope that it's better than this, or I'll be terribly disappointed.