Expired50% confidenceFactExact time
Costco's core source of profit is membership fees, not merchandise sales profit.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Costco's Business Model Explained: You Serve Whoever Pays You
bilibili破妄-胖6/20/2026
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