The final amount is different from the amount given on the quote
A bank pre-authorisation valid for 7 days is taken from your credit card at the time of ordering. This is not a debit, but some banks may make it look like one. This amount is higher than the fare in order to secure the payment of any possible changes from the initial quote (waiting time, additional stops, etc.). If the fare doesn’t change, only the amount given on the quote is debited.