FILE - This undated file image provided by Amgen Inc. shows the cholesterol-lowering drug Repatha. Warranties and money-back guarantees, long used to entice buyers of products like outdoor clothing and appliances, are now being used to sell something more vital: pricey new-generation drugs for diseases like rheumatoid arthritis and cancer. Drugmaker Amgen announced a deal the first week of May 2017 with insurer Harvard Pilgrim that will give the insurer a refund if a patient has a heart attack while on its $14,000-a-year cholesterol drug, Repatha. (Robert Dawson/Amgen via AP, File)
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