Attempts to set up an author’s page at amazon.com revealed that they do, indeed, list Frankentein’s Prescription, though seem not to offer copies themselves. They do, however, list sellers willing to provide you with a used copy at $101.33, or, better yet, a new copy at $401.66. Inflation is indeed a dreadful thing.
Meanwhile, the nice people at Tartarus Press will sell you a copy much more reasonably at http://freepages.pavilion.net/tartarus/fprescription.htm.
They have a lot of other good stuff there, as well.