Represents fare information with amount and currency for locale-aware formatting.
Used to display fare in the format appropriate for the user's locale, e.g., "168 ₽" for Russian locale, "168 ₸" for Kazakh locale.
The Currency instance for formatting. Determined from the route's cost info when available, falls back to the device locale currency.
Fare amount in the main currency units (e.g., rubles, tenge).