I'm a GM for Costco and have worked for this incredible Company 34 years. If you want chips, green beans and the basics, we are about the same. With most other things it isn't even close. We are the second largest seller of cars in America because people trust us for pricing. Our travel has incredible deals and you will not find a cheaper rental car anywhere. Our fresh food (Meat, bakery & Deli are actually fresh. We don't sell discounted and green meat, pumpkin pie is made fresh and we sell the most in the world. Our pizza in the food court weighs twice as much as any competitor for $9.95. The Kirkland brand is top notch and does over 88 billion in sales. That alone is one of the largest companies in the world. Our top tier gas was rated the highest quality in America, Sam's was rated the worst. I could go on for days, but I'm sure people get the point. The last thing is a topped out cashier at Costco makes about 70k a year and the benefit package is worth another 30-40k. Sam's managers don't even make that. Hope this helps some.