Free Planet Explorers Chicago for Kindle Download

Amazon has the kindle edition of the Planet Explorers Chicago Guidebook for Kids available to download for free right now. The digital list price of this book is $3.99. My son really likes to look at these Planet Explorer Guidebooks with me and this one is great because it's for a city we're likely to visit!  Prices on Amazon can fluctuate, so be sure to verify the price before buying.

(Thanks The Frugal Girls!)