|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||7 days ago||46.03||$22.38||You save $23.65|
|Amazon US||3 days ago||31.07||$22.38||You save $8.69|
|Book Depository US||3 days ago||24.11||$22.38||You save $1.73|
David Olsen is the author of the bestselling The Words You Should Know. He lives in Columbia, MD. Michelle Bevilacqua is a former editor with Adams Media and the author of More Words You Should Know. She resides in Avon, MA. Justin Cord Hayes is the author of 101 Things You Didn't Know About Casino Gambling and His/Hers, among other books. He lives in North Carolina.