Cut Google Maps API Spend

My ride-hailing and delivery platform serves about 7,500 registered users and thousands of completed trips, all running on a Laravel backend with customer and driver apps in Flutter. Lately each ride is costing an extra dollar or two purely in Google Maps fees, which is eating into margins... (Budget: ₹600 - ₹6500 INR, Jobs: Android, API Development, Dart, Flutter, Google Maps API, Laravel, MySQL, PHP)