Amazon recently removed four audiobooks from their list of
free Whispersync pairs. These audiobooks will now cost $0.99 each. The matching ebooks remain free. For a listing of former free Whispersync pairs,
see this post.
Currently, there is only one free title on the list -
Aladdin and the Enchanted Lamp - April's free audiobook of the month.
Lair of the White Worm remains free for the pair (this title was never on the list).
Titles removed from free list