The Jim Dale section has a number of kids' titles that are under $5, including these three:
The Spirit of Christmas, $1.95
A Visit from St. Nicholas, 65 cents
Jim Dale Talks About The Shoe Bird, free
So far I've also found:
Mary Louise, $2.99 after buying the free Kindle version
Sherlock Holmes: The Adventure of the Blue Carbuncle, $1.95