The pass-through of cost increases to prices has been observed for a wide range of goods and services: food, daily necessities, and durable goods for the former, and dining-out for the latter. This holds true even when excluding the effects of (1) items with significant price fluctuations, such as energy, and (2) temporary factors, including the domestic travel discount program.
Concerns about fairness and the need to minimize moral hazard add to the complexity of the issue; we want to help borrowers in trouble, but we do  4  As already noted, foreclosure starts likely increased by roughly 50 percent to 1-1/2 million last year, and foreclosure starts are on track to rise further this year.