public static void Main()
Console.WriteLine("Would you like to be in upper or lower tier?");
string tierLevel = Console.ReadLine();
Console.WriteLine("What is your age in years?");
string ageStr = Console.ReadLine();
int ageInt = Convert.ToInt32(ageStr);
if (tierLevel == "lower") {
Console.WriteLine("Price is £10");
Console.WriteLine("Price is £5");
Console.WriteLine("Price is £20");
else if (tierLevel == "Lower") {
Console.WriteLine("Price is £10");
Console.WriteLine("Price is £5");
Console.WriteLine("Price is £20");
else if (tierLevel == "upper") {
Console.WriteLine("Price is £15");
Console.WriteLine("Price is £10");
Console.WriteLine("Price is £25");
else if (tierLevel == "Upper") {
Console.WriteLine("Price is £15");
Console.WriteLine("Price is £10");
Console.WriteLine("Price is £25");
Console.WriteLine("Invalid Tier!!");