This seems like a good place to point out something I learned recently. You don't have to be a member to shop at the Costco pharmacy. Apparently, at least in Ontario, it's illegal for any pharmacy to deny service for reasons such as demanding a membership fee. So, in this case, she could have paid for medication with her debit card. Costco hasn't exactly shouted this policy from the rooftops but their pharmacy service is the best there is, cost wise. I'm very happy being a Costco member even though they, like all businesses, occasionally screw up. (Just re-read the story, and maybe his "supplement" wasn't a pharmacy item. D'oh.)