public static double decrementPrice(double price) {
        double newPrice;
        if (price > 100.0) {
            newPrice = price - 10.0;
        } else if (price > 50.0) {
            newPrice = price - 5.0;
        } else if (price > 30.0) {
            newPrice = price - 2.0;
        } else if (price > 20.0) {
            newPrice = price - 1.0;
        } else if (price > 10.0) { 
            newPrice = price - 0.5;
        } else if (price > 6.0) {
            newPrice = price - 0.2;
        } else if (price > 4.0) {
            newPrice = price - 0.1;
        } else if (price > 3.0) {
            newPrice = price - 0.05;
        } else if (price > 2.0) {
            newPrice = price - 0.02;
        } else {
            newPrice = price - 0.01;
        }

        newPrice = Double.parseDouble(formatPrice(newPrice));
        return newPrice;
    }