American shoppers are going gray. Chalk it up to aging baby boomers born between 1946 and 1964. There are roughly 74 million of them alive today, still outpacing millennials, with the first wave of boomers already entering retirement. And boomers like to shop. In particular, they like to shop at Costco. More older shoppers prefer the warehouse club over popular retailers such as Walmart and Target, and boomers are more likely that millennials to renew their Costco memberships.

So it makes perfect sense that Costco caters to retirees and near-retirees, despite the stereotype that it only sells bulk items that are too much for an empty nest. As a boomer and regular Costco shopper, I already knew this from personal experience, but recent research trips to my local warehouse clubs revealed even more deals aimed at the mature market that I hadn't noticed before. Here are a dozen things I found that uniquely appeal to retirees. Check them out.

Eyeglasses

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A couple of year ago I first explained and since then I bought another pair at Costco and had lenses replaced in older frames. Why Costco? Put simply, I found