using System;

public class Program

{

    public static void Main()

    {

        double budget = 1000000;

        double maximumBid = CarAuctionCalculator.CalculateMaximumBid(budget);

        Console.WriteLine("Maximum bid: $" + maximumBid);

    }

}

​

class CarAuctionCalculator {

    // Constants for fixed costs

    private const double BASE_USAGE_FEE_MIN = 10;

    private const double BASE_USAGE_FEE_MAX = 50;

    private const double SELLER_SPECIAL_FEE = 0.02;

    private const double STORAGE_FEE = 100;

    // Method to calculate the maximum bid amount

    public static double CalculateMaximumBid(double budget) {

        // Get the base usage fee (10% of the bid amount, minimum $10 and maximum $50)

        double baseUsageFee = Math.Max(BASE_USAGE_FEE_MIN, budget * 0.1);

        baseUsageFee = Math.Min(baseUsageFee, BASE_USAGE_FEE_MAX);

        // Get the association fee

        double associationFee = 0;

        if (budget <= 500) {

            associationFee = 5;

        } else if (budget <= 1000) {

            associationFee = 10;

        } else if (budget <= 3000) {

            associationFee = 15;

        } else {

            associationFee = 20;

        }

        // Calculate the total costs

        double totalCosts = baseUsageFee + (budget * SELLER_SPECIAL_FEE) + associationFee + STORAGE_FEE;

        // Calculate the maximum bid amount

        double maximumBid = budget - totalCosts;

        return maximumBid;

    }

}