The Persistence of the Negative makes it to Amazon. The usual punishing price point I know, but interested parties, especially reviewers, get in touch nearer the time. Also, any requests to EUP for a paperback gratefully received, and also any orders, again nearer the time, for library copies. Currently I am completing the copy editing, then I have the index to do, and then it's fame and fortune all the way.
On a related, and heartening note, Nihil Unbound makes it into paperback (after 3 years...).