The trend toward "unbundling" airfares is expected to pick up speed next year when American Airlines reportedly presents passengers with a broader array of a la carte services they can buy for an additional fee. "We as an industry have opted to not just raise (ticket) prices but to raise prices and change the fee structure," says an executive at American. Many carriers have unbundled certain services and amenities to boost revenue and offset high jet fuel prices. Although some passengers grumble about the more complex fares, experts agree they are here to stay. "Honestly, I think it's better for consumers," says the founder of airfarewatchdog.com. "If I pack light, why should I pay for the guy who packs heavy?"