|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon US||yesterday||21.31||$13.43||You save $7.88|
|Book Depository US||today||14.78||$13.43||You save $1.35|
Chris Oxlade is an experienced author of non-fiction books for children. He has written more than 200 titles on science, technology, sports and hobbies, from encyclopedia articles to fun activity books.