Picture indulgence, and olive oil represents ... the same amount. Costco customers were thrilled to find it retailing on the chain's shelves for a fraction of the usual price.

Second, Costco prices can vary by store location ... And while aluminum foil and olive oil are staple items for a lot of people, those may be just two items of many you buy regularly.

In Monday's call, Costco Chief Financial Officer Gary Millerchip mentioned the new prices of some popular ... 3-liter bottles of Spanish olive oil, down from $39 to $35; standard foil, from ...