KW Badminton Club - one of my favorite badminton clubs to play in Ontario. http://kw.ontariobadminton.on.ca/ They should have a pro-shop.. Otherwise, try to get in contact with one of their instructors, Andrew Ma. He is sponsored by Li-Ning and he should have demo products available.
and if you are a university student, this place is accessible by public transit (#8 bus - when i was in uni ~10 years ago). Close to downtown kitchener...5-10 min walk from bus stop.