i have a COSTCO membership and as long as you use restraint( and its soooo hard sometimes) you can save money buying in bulk. I buy things like Ketchup, detergent, dishwashing liquid, juice, cheese, eggs,and a few other things that are essentials around the house. and the kirkland brand( costco's brand) is really just the same as the name brand). the difference between sam's club and costco( i saw someone say they dell different things) is that costco is supposedly considered to cater to the "middle class" customer. that's why they won't sell Pampers because they are supposedly to good for the "middle class". but i pretty much shop where ever i can get a deal or something I NEED is on sale.