I don't have a Costco card and never have. My mom has a Costco card. My daughter has one, too. (They lived together so they're on the same membership. I think that's how that works.)
I don't know much about Costco. I know they sell items in big sizes. I know some people swear by them. But that's about it.
But I learned more today. I visited my daughter and we went to Costco. Unfortunately, I was the one whose cash was being used. Being used and being spent quickly, mostly on fruits and veggies. It was quite an experience watching folks buy huge boxes and bags of snacks and sweets. (The pies particularly looked mighty tasty.) I was quite proud of myself for not partaking in the huge unhealthy food purchases. $75 in fruits and veggies was plenty for me. Even with my daughter and I splitting the produce, my refrigerator is pretty well full.
I did enjoy one sweet purchase. I ran out to the only Rocky Mountain Chocolate Factory in Boise. If you've been reading my blog, you know my obsession with the apples. I bought (and ate) a Butterfinger one. Although I certainly could have had my choice of many.