Nine of Joseph Wambaugh's backlist crime titles published by Mysterious Press late last year are $2.99 at
Barnes & Noble (
link for his books). It's a search link so it probably will expire, a search for his name on the site will bring up the books.
Six are available at
Sony (
link for the books).
Only
The Black Marble and
The Glitter Dome are price matched so far at Amazon. ***Edited to add:
all 9 books are now price matched at
Amazon.***
***Edited to add:
Kobo seems to have discounted some or all of the books, you may have to click on Buy Now to bring up the discounted price.***
It's likely this is a promotion to go with the release of
Harbor Noctourne next week.