The most important things about Costco are two: membership fees & locations. They sell goods with profit margin about 7%, which is not acceptable by many supermarkets. Costco really depends on membership fees for profits. We paid US$100.00/yr. And store locations are always in middle, upper class neighborhoods, and business areas. Potential customers will have enough purchasing power to buy and keep its growth.
Costco 始于西雅图，总部也是在西雅图，它们在美国的确是会无条件退货的，货品的确有品质保证，但要买的量大，会员费要$110美元/一年(黑卡高级会员)但好处是有现金回赠，基本上一年的回赠钱都抵消了会员费，costco在美国到现在还是高档次的超市，我就住在.美国第一间costco附近的区域Beacon hill
My family loves to shop at Costco but hate to pay because most of their items you need to buy in bulk and money adds up fast but we do like their return policy they used to you return any electronic items with in 3 years but it got abuse because some customers would return item right before 3 years expired by than the item is outdated or broken basically they cannot even resale them as open box so now we try to buy item that will last long time like paper items as for food i have teenagers in my house so they went through foods fast some time we brought foods i only ate small piece next day it's all gone😤things like blue berries strawberry once my wife washed them it's gone within hours
