The Costco Bulk Buying Paradox (2026): The Spoilage Math & The 3-Tier Grocery Arbitrage System
Walking out of Costco with an oversized cart packed with 5-pound bags of produce, twin packs of artisan bread, and industrial-sized tubs of yogurt produces an unmistakable psychological high. On paper, the unit price per ounce looks 30% to 50% cheaper than standard supermarkets like Safeway, Kroger, or Whole Foods. Yet, at the end of … Read more