Astrid Maxxim and the Antarctic Expedition will be available September 19th for $0.99.  You can preorder your ebook now wherever fine ebooks are sold.  Until then, pick up the other two Astrid Maxxim adventures, just 99 cents each.

Teen inventor Astrid Maxxim is back in her third adventure as she makes a journey to the bottom of the planet to uncover the secrets of a mysterious lost expedition. Meanwhile, troubles plague her friends and family as a hostile takeover threatens Maxxim Industries. Join Astrid and her friends as she faces the frozen dangers of the Antarctic, wild animals, mad bombers, and corporate high finance.