Across the board on most books. It's all based on page counts. The smaller books (by number of pages I think up to 40) are not changing. The HB editions in some sizes are not changing (not honey butter Kevy, hard back)
I'll re-upload a corrected edition of the book on October 1. There were some edits to be made and I've also since learned the name of a previously unknown person in a couple of the photos.
I'm extremely happy with the sales, how can I possibly complain? I never though 100 of them would sell, not at this price. If the sales slow down, I can live with that. As you pointed out, I've sold well over 100 copies. For a book that is word of mouth, I think it's pretty good. With the price increase I do expect Larry Edmunds to stop carrying them, they're not making much profit on them.
I also need to keep positive that the efforts to get another publisher to pick the book up will bear fruit. If not UC Press, I'm all set to pitch it to Chronicle Books and I may even pitch it to Rizzoli. There are a couple of LA publishing houses that might be interested, as well. Nothing ventured, nothing gained.