|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||17 days ago||98.58||$74.19||You save $24.39|
|Book Depository US||today||81.69||$74.19||You save $7.50|
Orin Thomas is a consultant, writer, and Microsoft MVP for Consumer Security. He has written numerous Microsoft Press Training Kits focusing on Windows and Windows Server, and he serves as series editor for Rapid Review. He is also a contributing editor for Windows IT Pro magazine.