Kirkland Signature coffee, for example, has a diverse selection of blends that impress even the most staunch coffee aficionados. Many are just as tasty as popular go-tos and often more affordable.

That means you get more from Costco — and extra filter — and pay less ... $5.99 — that's $2.39 per 100 grams. Kirkland Signature French roast coffee. Right: Starbucks French roast coffee.