Two McDonald's restaurants in Fountain Valley, CA, selling the same Big Mac from the same menu system, post prices $4.50 apart. Fast Food Index prices the complete menu at every restaurant it tracks, which makes gaps like this visible street by street.
Franchisees set their own prices, and most customers never see the spread because they only ever visit one store. Fountain Valley has 3 McDonald's restaurants with a priced Big Mac; the typical one charges $6.19. The cheapest and most expensive sit at opposite ends of a $4.50 range inside one city.
more for the same Big Mac on the other side of Fountain Valley
Prices checked November 9, 2026 and November 10, 2026. See every McDonald's price in the state on the McDonald's menu prices page, or browse the price map.
| Chain | Item | City | Cheapest | Priciest | Gap |
|---|---|---|---|---|---|
| McDonald's | Big Mac | Fountain Valley, CA | $3.49 | $7.99 | +$4.50 |
| Burger King | Whopper | Chicago, IL | $5.89 | $9.19 | +$3.30 |
| Taco Bell | Crunchwrap Supreme | Chicago, IL | $5.49 | $8.49 | +$3.00 |
| Chick-fil-A | Chick-fil-A Chicken Sandwich | Atlanta, GA | $4.99 | $7.00 | +$2.01 |
Across the four flagship items, 365 cities have a same-chain gap of $1.00 or more.
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