The Forex market is a global decentralized, over-the-counter market. This means that there’s no single or unified platform (exchange) where all brokers could carry out their transactions. There’s simply no “one official price” from a central source for any financial instrument. However, it’s worth noting that these differences in quotes reported by different dealers are slight. It happens because brokers obtain quotes from various banks. Some brokers mix several quotes streams from different liquidity providers, which leads to minor differences. If we take the EUR/USD currency pair for an example, the difference usually doesn’t exceed 1-2 pips