static void Main(string[] args)
        {
            BronzeCard bronzeCard  = new BronzeCard(90, 150);
            BronzeCard bronzeCard1 = new BronzeCard(600, 250);
            SilverCard silverClass = new SilverCard(600, 850);
            GoldCard   goldCard    = new GoldCard(1500, 1300);

            PayDeck.AddBronzeCard(bronzeCard);
            PayDeck.AddBronzeCard(bronzeCard1);
            PayDeck.AddSilverCard(silverClass);
            PayDeck.AddGoldCard(goldCard);

            PayDeck.BronzeCards();
            PayDeck.SilverCards();
            PayDeck.GoldCards();
        }
 public static void AddGoldCard(GoldCard goldCard)
 {
     goldCards.Add(goldCard);
 }