for these items are relatively inex

for these items are relatively inexpensive and have few good substitutes. When the
demand curve is inelastic, as it is in Figure 5-8, a decrease in price causes total revenue
to fall. You can see this in the figure: The price of wheat falls substantially,
whereas the quantity of wheat sold rises only slightly. Total revenue falls from
$300 to $220. Thus, the discovery of the new hybrid lowers the total revenue that
farmers receive for the sale of their crops