Well, it's taking some time to get the various editions of The Pict straight on Amazon. There are two Kindle versions, one for $3.84, and one for $6.00. The $6.00 edition should be $4.80, and the $3.84 version (which should also be $4.80) is flowing through from an affiliated website (http://www.mobipocket.com/).
The latest paperback edition is priced lower than the original edition, but the original edition still shows up when the title is searched. The new edition shows up in the "Also Available in" box below the main title area. It will apparently take some time to get this all worked out. So far, I'm very happy with Amazon's responsiveness in dealing with it.
If nothing else, I'm learning a lot about publishing my own books and editions. By the time Number Two rolls around, I'll have it straight.