With gas prices soaring, Americans looking to save at the pump are flocking to Costco in droves. In its latest quarterly earnings report, the budget-friendly retailer described a “record-breaking” volume of sales in its gasoline business. Costco operates its own pumps attached to its retail locations, which members who pay $65 annually can use to fill up.  Like the food and goods inside Costco warehouses, the company’s fuel prices aggressively undercut the competition—good business sense as customers grapple with affordability. The spike in demand was so significant that its pumps required additional gas deliveries to keep fuel stocked these last few months.  As the war in Iran continues to elevate fuel prices, the allure of cheaper gas could entice new members to sign up for their first Costco card.…