My publisher has just released Producing Great Sound in a hardcover edition. Apparently the paperback been popular enough at film schools that their libraries are asking for more rugged versions.
The text is exactly the same as the paperback and Kindle editions, and it has the same online tutorials and diagnostic files. But it costs about 5x as much. (It's a very nice binding, and they kept the glossy cover photograph of G. John Garrett CAS holding a boom on the Alaskan tundra.)
I'm not sure how I feel about this. It's flattering, but textbooks are too expensive already. That's why I specified a reasonably priced paperback and electronic edition when we negotiated the contract.
If you feel really compelled to buy the hardcover, I'd suggest you buy five copies of the paperback and give them to friends... unless you're a library or institution, and need the more rugged binding.