Computer store

total_price_without_taxes = 0
customer_type = ""

while True:
    input_data = input()

    if input_data == "special" or input_data == "regular":
        customer_type = input_data
        break

    price = float(input_data)

    if price <= 0:
        print("Invalid price!")
        continue

    tax = 0.2 * price
    total_price_without_taxes += price

if total_price_without_taxes == 0:
    print("Invalid order!")
else:
    print("Congratulations you've just bought a new computer!")
    print(f"Price without taxes: {total_price_without_taxes:.2f}$")
    print(f"Taxes: {total_price_without_taxes * 0.2:.2f}$")
    print("-----------")

    total_price_with_taxes = total_price_without_taxes + (total_price_without_taxes * 0.2)

    if customer_type == "special":
        total_price_with_taxes -= (total_price_with_taxes * 0.10)

    print(f"Total price: {total_price_with_taxes:.2f}$")