Higher gas prices are just the beginning. Prices for many goods Houstonians rely on are likely to increase in the coming weeks as a result of the U.S. war with Iran, experts said. “The short answer is: pretty much everything’s affected,” said David Gantz, a fellow in trade and international economics at Rice University’s Baker Institute for Public Policy. From groceries to plastic goods, prices are likely to rise for anything with a supply chain reliant on oil and natural gas, as producers and m