Здравейте, опитвам се да разбера къде греша? 

Каквито и стойности да въведа получавам "0.0"

Пример:

beer
Sofia
6
0.0

Process finished with exit code 0
 

Ето го и кода ми

import java.util.Scanner;

/**
 * Created by BinchoDinev on 2/24/2017.
 */
public class Shop {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String product = scanner.nextLine().toLowerCase();
        String city = scanner.nextLine().toLowerCase();
        double quantity = Double.parseDouble(scanner.nextLine());
        double price = 0;

        if (city.equals("Sofia")) {
            if (product.equals("Coffee")) {
                price = 0.50;
            } else if (product.equals("water")) {
                price = 0.80;
            } else if (product.equals("beer")) {
                price = 1.20;
            } else if (product.equals("sweats")) {
                price = 1.45;
            } else if (product.equals("peanuts")) {
                price = 0.60;
            }
        } else if (city.equals("Plovdiv")) {
            if (product.equals("Coffee")) {
                price = 0.40;
            } else if (product.equals("water")) {
                price = 0.70;
            } else if (product.equals("beer")) {
                price = 1.15;
            } else if (product.equals("sweats")) {
                price = 1.30;
            } else if (product.equals("peanuts")) {
                price = 1.50;
            }
        } else if (city.equals("Varna")) {
            if (product.equals("Coffee")) {
                price = 0.45;
            } else if (product.equals("water")) {
                price = 0.70;
            } else if (product.equals("beer")) {
                price =1.10;
            } else if (product.equals("sweats")) {
                price = 1.35;
            } else if (product.equals("peanuts")) {
                price = 1.55;
            }
        }
         double total = price * quantity;
        System.out.println(total);
    }
}