I know they mostly deal in road bike stuff but I just picked up a Hope headset for CDN$77.50 with free shipping from ProBikeKit: http://www.probikekit.com/ca/compone...e-headset.html Use coupon code "DOLLAR10" for $10 off.

Another good deal is the FSA Orbit Xtreme Pro Headset for CDN$48.33 at Merlin Cycles. Shipping is another CDN$8.07 unless you spend over 200: FSA Orbit Xtreme Pro Headset | Headsets | Merlin Cycles