Re our earlier post today on Balsamic Vinegar, just a note to say that Costco's Kirkland (their house brand) Tuscan extra virgin olive oil is very, very good - far better than any supermarket brand - and a great buy (better than you can buy in specialty stores for twice the price - it is our house olive oil. Costco spent several years selecting the orchards in Tuscany for their oil.).
And the same goes for their Modena Balsamic. I won't even get into how good their butcher departments are.