|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||2 days ago||105.02||$84.21||You save $20.81|
|Book Depository US||2 days ago||102.27||$84.21||You save $18.06|
|Amazon US||yesterday||87.3||$84.21||You save $3.09|
Stephan Sorger, M.S., M.B.A., is an authority on marketing analytics, supported with both professional and academic work on the subject. Professionally, Mr. Sorger has applied quantitative methods at leading organizations such as Oracle, 3Com, and NASA. As an instructor, Mr. Sorger has taught marketing analytics at the University of California, Berkeley Extension since 2008.