Agreed, love Heuer don't love TAG Heuer...
Then again, if you want a Monaco, nothing else is a substitute (Expect for a real 70's Heuer Monaco!)
If you don't mind the drive, Ancaster Jewelers in, well Ancaster. Ask for the owner Jean-Pierre and tell him that I sent you. He should give you a good price. Feel free to call him first, probably safer given the distance.