Pick an ereader, any ereader! The deal is across the board!
http://www.barnesandnoble.com/u/spotlight-featured-author-nook-books/379002742/
http://www.kobobooks.com/ebook/Dead-Witch-Walking/book-GtTYhS4zyU-69smhFJixEA/page1.html
This is great for new potential readers or even us well established Hollows fanatics who just want it as an ebook. I can personally say that I love the the text search feature.
Kim Harrison at her lovely Drama Box also notes that the book is highlighted.