Heather Cook, a freelance writer, editor and photographer, writes:
I have personally witnessed book rage in
Calgary, Alberta. At a local Chapters that I frequent several times a
week, an older man walked up to a store associate and held out a book,
asking, "How much?" The associate calmly looked at the book, found the
correct price and responded, "$36.95." The man, who acted as though
this was the first time ever he'd noticed a different price, rudely
insisted that he should get the book for the cheaper, U.S. price on the
cover. The employee handled it wonderfully: he whipped out a flyer from
his back pocket saying, "But here's a flyer that gives you a discount
if you spend more than $35 today." This diffused the situation
somewhat--at least enough so that the customer swiped the flyer out of
the employee's hand and skulked off, book in hand to the till.

