We went here to have a double goose-down duvet cover dry cleaned. The place across the street wanted $60. Using that as a guide, we figured we'd have to go to some place outside of the downtown core to get a modest price. But then we called King West Cleaners. They were cheaper than any place I called (in or out of the downtown core), $34.
I highly recommend this place. The guy is super nice, and they are super cheap for dry cleaning dress shirts downtown.