Uninsured cancer patients are asked to pay anywhere from two to 43 times what Medicare would pay for chemotherapy drugs, according to a new study. Uninsured patients who did not negotiate billed amounts for chemo drugs could expect to pay $6,711 for an infusion of the colorectal cancer drug oxaliplatin. However, Medicare and private health plans only pay $3,090 and $3,616 for the same drug, respectively.