While the opportunity certainly exists for there to be additional copies available for retailers after the campaign, If you would like to support the campaign and make sure your copies reserved, the "Ice Giant: School/Library Gift Pack" is also valid for retail locations that would like to receive copies of Ion to put on their shelves.
Ion can be read as a bedtime story to children at any age, however, if you're curious about when little ones can read about Ion for themselves, the story probably falls somewhere in the 2 to 3 range on the Harper Collins "I Can Read!" scale found here: https://www.icanread.com/levels/
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