I just picked up a used set last week in Mississauga. Found them on mercurymarauder.net 4 interceptor wheels,Hankook snow tires (less than 5000km),chrome police caps and all proper lug nuts for $550. I didn't bother to try haggling with the guy and he tossed in a K&N air filter too. Ya just gotta keep looking.
2004 Mercury Marauder