i had a saitek r440 wheel (payed £25 new) it had 180° lock (90 each way), and it did the job for me til i got my dfp.
cropsy didn't like the r440 because it was plastic and he said it felt cheap. (he was right it only cost me £25 new lol). because the wheel is made of plastic, the ffb is really strong, in some games i's better than the dfp imo.
maybe the r440 might be the wheel for you