Fruit shop with switches

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _7_Fruit_shop_with_switch
{
    class Program
    {
        static void Main(string[] args)
        {
            var fruit = Console.ReadLine();
            var day = Console.ReadLine();
            var kg = double.Parse(Console.ReadLine());
            var price = 0.00;

            if (day == "Monday" || day == "Tuesday" || day == "Wednesday" || day == "Thursday" || day == "Friday")
            {
                switch (fruit)
               {
                case "banana": price = kg * 2.50; break;
                case "apple": price = kg * 1.20; break;
                case "orange": price = kg * 0.85; break;
                case "grapefruit": price = kg * 1.45; break;
                case "kiwi": price = price = kg * 2.70; break;
                case "pineapple": price = kg * 5.50; break;
                case "grapes": price = kg * 3.85; break;

                default:    break;
                }
            }

            else if (day == "Saturday" || day == "Sunday")
            {
                switch (fruit)
                {
                    case "banana": price = kg * 2.70; break;
                    case "apple": price = kg * 1.25; break;
                    case "orange": price = kg * 0.90; break;
                    case "grapefruit": price = kg * 1.60; break;
                    case "kiwi": price = price = kg * 3.00; break;
                    case "pineapple": price = kg * 5.60; break;
                    case "grapes": price = kg * 4.20; break;

                    default:   break;
                }
            }

            if (price > 0)
            { Console.WriteLine("{0:F2}", price); }
            else
            { Console.WriteLine("error");  }
        }
    }
}