That's not so - there is a separate limo line and those rates are more expensive. The cabs in the taxi line are mostly cars that are the same as the limos. I found that if you call Aeroport Limo-taxi after you get your luggage and ask for a taxi you get the best deal, even less than AirFlight and they arrive instantly. The PWT Airport Express is a better deal and very comfortable if your hotel is on their route. If you're going for really cheap, take the TTC bus and the subway for one fare.