My publishing company started sooner than planned when I acquired the rights and remaining inventory of my first book from the original publisher.  One of my main gripes was that it was overpriced (started at $79 then was upped to $93).  I've lowered the price ($39, it's a niche book), but the book was released at the end of 2005 so it's been out there a few years.  It was reviewed in several trade magazines when it was released. 

What sort of marketing can I do for a not-new book?  Or should I just consider it new, since it's got a new life, and do what I would do for a new book?