Amazon jumped into the pharmacy business late last year with Amazon Pharmacy. AdThey are also big Amazon shoppers, so they wanted to see if they could save some money by getting their refills with Amazon Pharmacy instead of Costco. An Amazon representative told KPRC 2 News Pam could call her insurance company to ask what her co-pay will be with Amazon Pharmacy. AdPioglitazone, for example, is more than five times the price at Amazon Pharmacy at $88.34 compared to Costco’s price of $17.10. If you don’t have insurance, Amazon Pharmacy prices are lower for Prime members versus non-Prime customers.