Dukes Prefer Blondes, the fourth book in the Dressmakers series, is a Chirp audio book deal this month. Until 2 December, you can get it for $4.99.
Chirp, by BookBub, is free to join. BookBub is a book discovery service, also free to join. Subscribing brings you daily emails about eBook deals. Both provide a way to try out book for very low price—well worth joining.
You can find the deal on Dukes Prefer Blondes here.