Books like 12 Shades Of Surrender
Anne Calhoun
12 Shades Of Surrender is 336 pages, about 6 hours 10 minutes at 250 words a minute.
8 books to read next
How long each takes
The Story of O 3.7 h 
Beauty's Punishment 4.3 h 
Beauty's Release 4.7 h 
Venus in Furs 3.7 h 
Best Bondage Erotica 2011 4.0 h 
You Are Mine 7.6 h 
Kink 4.7 h 
To Command and Collar 7.6 h Bar height shows length. Estimated at 250 words a minute.