Unsure Whether He Should Pick Up a Bunch of Cilantro

Short Answer

Unsure whether he should pick up a bunch of cilantro before heading home, the commuter weighed his options. If he bought a bunch and they didn't need it, he would likely have lost the 79 cents because it would surely spoil. If he didn't buy it, this would necessitate another trip to the grocery store, which would cost $3.79 in gasoline. The ________ cost is $3.79.