Table : TABLE 4-1 Consumer Surplus When the Price of a Used Textbook Is $30
Potential buyerWillingness to payPrice paidIndividual consumer surplus = Willingness to pay − Price paid
Aleisha$59$30$29
Brad 45 30 15
Claudia 35 30  5
Darren 25
Edwina 10
All buyersTotal consumer surplus = $49