3150 Fostoria Way, Danville, CA 94526
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The savings are a no-brainer, but I'm continually surprised by the quality of Costco's merchandise. Everything from food to furniture is top of the line, so they have no trouble attracting customers, but they also keep coming up with new ways to make those customers happy. No need to go to the post office - there are stamps right at the register. Want one of their super-cheap lunches? Just say the word, and the cashier will add the cost to your bill, so you can go directly to the pick-up line. Recently, they came up with really strong, giant shopping bags that make it easy to load your purchases in the car. Don't know what I'd do without Costco!