I recently bought a blood pressure monitor from Amazon but found that it consistently gave abnormally low readings, despite battery changes and with no evidence of any cuff leakage. Amazon's web site says that personal care items like the monitor are "not eligible for return," so I telephoned their customer service to discuss the issue. The representative immediately initiated a full refund and told me that I didn't even need to return the monitor; I can donate it or give it away or just throw it out. The whole process took 5 minutes. Regardless of any other problems one might have with Amazon or their policies, they certainly provided excellent customer service to me this time.
John