|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||4 days ago||49.51||$33.88||You save $15.63|
|Book Depository US||yesterday||37.3||$33.88||You save $3.42|
MARK HATCH is CEO of TechShop, a membership-based, do-it-yourself (DIY) makerspace. It provides the digital and physical tools to make almost anything. TechShop members have made everything from robots and a lunar lander to a successful iPad case and craft businesses.