|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||4 days ago||79.66||$42.26||You save $37.40|
|Amazon US||5 days ago||55.25||$42.26||You save $12.99|
|Book Depository US||yesterday||46.31||$42.26||You save $4.05|
Jamis Buck is an alumnus of the Ruby on Rails core team, and has worked at Basecamp (formerly 37signals). He's been active in open source for years, and has a deep passion for learning. Some years ago he began researching and writing about maze algorithms, and the bug never left him. He's probably lost in a maze somewhere, right now.