A number of books from Fortress press are on sale for kindle. The sale prices seem to be either $4.99 or $6.99, although a few are $3.99. Most of these are academic works and the prices have been in the $30-40 range.
The complete list of books from $3.99 to 6.99 from Fortress Press is 926 books. The last Fortress Press sale lasted a few weeks. Last sale the number fluctuated quite a bit, but the sale lasted for a couple weeks. There are 797 that are $4.99 and 121 that are $6.99
A few years ago Bonhoeffer’s complete works, a 17 volume new translation with good introductions were released. Most of these are on sale for $4.99. His expanded 800 page Letters and Papers from Prison I have been waiting for. I have already purchased (and reviewed) the volume that combines Life Together and Psalms: The Prayer Book of the Church
This is Wright’s newest book surveying the academic work on Paul recently.
Also on sale for $4.99
Some other books that look interesting:
Fortress Commentary on the Bible (This is a two volume set collected into a single Kindle Edition, 1750 pages) – $4.99
I haven’t sorted through the whole list yet. But I have reviewed several that are on sale: (links to reviews which link to the sale books)