As the Iran War drives up gas prices, many retail stocks are retreating amid investor concerns about softer consumer spending. However, one retail stock that could actually benefit from higher gas prices is Costco (NASDAQ: COST), the world's largest warehouse club retailer. Why would lower gas prices boost Costco's sales? Costco's member-only gas stations sell fuel at lower prices than local averages, often with discounts of $0.20 per gallon or more. As national gas prices rise, more drivers will likely ...