It's not a scam. Its upfront that you are paying for a membership to shop there. Nothing hidden, nothing dishonest.I generally agree. I'm no Costco fan boi...paying for the right to shop and spend your money is a pretty good scam.
They are checking membership at the door, so that in some communities, one person does not get a card, and 20 families use it.
Also, i have not seen reports of grab and run robbery there, like walmart and other stores have experienced.
I have a membership to sams and costco. We like items at both stores.