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The same Whopper costs $3.99 at one San Antonio Burger King and $7.89 at another

As fast food pricing becomes more data-driven, Drive Thru Index compared the pickup prices of the same items at 233 restaurants of five chains in the San Antonio area. Within each chain, prices for the same item differ by up to 98% from one restaurant to the next.

데이터 기준일 2026-10-02.

핵심 사실

• Burger King Whopper: $3.99 to $7.89 (+98%)Cheapest in San Antonio, TX, most expensive in San Antonio, TX; median $5.99, 5% below Burger King's US median.
• Sonic Cheeseburger: $4.89 to $6.49 (+33%)Cheapest in Castroville, TX, most expensive in San Antonio, TX; median $6.49, 14% above Sonic's US median.
• Popeyes Classic Chicken Sandwich: $4.99 to $6.59 (+32%)Cheapest in San Antonio, TX, most expensive in San Antonio, TX; median $5.79, the same as Popeyes' US median.
• McDonald's Big Mac: $4.79 to $5.50 (+15%)Cheapest in San Antonio, TX, most expensive in San Antonio, TX; median $5.29, 12% below McDonald's US median.
• Chipotle Chicken Burrito: $9.15 to $10.15 (+11%)Cheapest in San Antonio, TX, most expensive in Universal City, TX; median $9.65, 2% below Chipotle's US median.

Anthony Gherghetta, an Australian software developer who built Drive Thru Index, started it after reading some of the buzz about AI being used to set fast food prices: he wanted to see whether it was true, and how big the price differences between restaurants really were. Prices bear out the contrast he noticed. In Australia, 97% of McDonald's restaurants charge within 10% of the typical Big Mac price; in the US, 53% do. The gap between the cheapest and the dearest tenth of restaurants is 10% of the typical price in Australia and 33% in the US.

“I kept reading that fast food chains were starting to use AI and customer data to set prices, so I wanted to see if it was true and how big the differences really were. In Australia, where I’m from, a Big Mac costs much the same wherever you buy it. In the US the price changes from one restaurant to the next. Fast food apps now know what you order, when and where, but customers can’t see how prices are set. So I built Drive Thru Index to check every restaurant, every day,” said Gherghetta.

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방법론, 소개, 연락처

Drive Thru Index reads every restaurant's menu from each chain's own ordering app every day; these are the latest pickup prices collected on or before October 2, 2026, in US dollars. The area covers restaurants within 25 miles (40 km) of downtown of San Antonio, each restaurant counted in its nearest city. Each chain is compared only with itself, on its own signature item, and only where it has at least 5 restaurants in the area; prices are never compared between chains or converted between currencies. The cheapest and most expensive restaurants leave out airports and similar special sites, which are reported separately.

About Drive Thru Index: Drive Thru Index (drivethruindex.com) publishes the menu price of every item at every restaurant of the biggest fast food brands, collected each day from the chains' own ordering apps. As pricing becomes more data-driven, it exists so that customers can see what each restaurant really charges and how it compares with others nearby. It covers the US, Canada, Australia, New Zealand, the UK, Ireland, Spain, Mexico and the Netherlands. Brands are only compared with themselves, and prices are never converted between currencies. Its figures are free to quote with attribution: "Source: Drive Thru Index".

The images with this release are free to use with the credit "Image: Drive Thru Index (drivethruindex.com)".

Media contact: anthony@drivethruindex.com

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