Historically, the government has effectively set prices through Medicare for wheelchairs, hospital beds and other medical equipment. But a demonstration project begun in 2011 introduced competitive bidding in roughly 100 metropolitan areas to see if market forces could bring down prices. The results have been dramatic. Prices for oxygen equipment went down 41 percent; wheelchairs, 36 percent; hospital beds, 44 percent; and the cost of diabetic testing equipment, like glucose strips, dropped by a whopping 72 percent. And research has shown no adverse effects on beneficiaries.