If those numbers are precisely accurate, it should be noted that Costco could be paying up to $100M to process memberships, and it would still literally actuall

If those numbers are precisely accurate, it should be noted that Costco could be paying up to $100M to process memberships, and it would still literally actually be most of their profit. Also "about 1/2" and "most" are not mutually inclusive. In fact, I'd expect they mutually occur with some frequency.