[Related to Making the Connection on page 254] According to the estimates of price elasticities of demand reported in Table 6.2, goods like cigarettes and cocaine have extremely low price...

[Related to Making the Connection on page 254] According to the estimates of price elasticities of demand reported in Table 6.2, goods like cigarettes and cocaine have extremely low price elasticities. On the other hand, the price elasticity for books and DVDs is very high (in absolute values). Briefly state your reasons for the occurrence of such differences.