Are you looking for the whole kit or just the steadicam itself?
If you're looking for the whole kit, try this guy:
Gear « Camera Rentals Vancouver
I rent from him all the time for equipment I can't be bothered to buy myself. Good guy, but you will need to call him ASAP as he only does special appointments after a certain time on Saturday's and all day Sunday.
If that doesn't work, I have a Glidecam HD-2000 (just the camera mount bit, not the vest/arm) that you're welcome to borrow.