|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon US||2 days ago||17.13||$4.60||You save $12.53|
|Amazon UK||today||26.21||$4.60||You save $21.61|
Philip Yungkin Lee, Ph.D. is a Senior Lecturer at the University of New South Wales in Sydney, Australia. He is the author of many language learning titles and has received a Teaching Excellence award from his university.