EDIT: I have a new post as this is old and busted. It was updated April 15, 2008. Please follow.

I’ve found a store the sells the original wellington boots in downtown Toronto. Yay!
Lee Valley Tools carries the original Wellys in green and blue.

Lee Valley Tools – Downtown opens April 3, 2006
590 King Street West
(416) 366-5959

Lee Valley Tools – East
1275 Morningside Ave.
Scarborough
(416) 286-7574
Fax: (416) 286-8174

Lee Valley Tools – West
5701 Steeles Ave. W.
Weston
(416) 746-0850
Fax: (416) 746-8474

Thanks the to the Constant Shopper. They also have a tip for lower cost options for boots. I would talk about them here but I don’t like them. LOL.
The 2 above links are from The Star. You will need to register to view the articles, or you can use Bugmenot

EDIT (10/24/2006): Hunter Wellingtons can be found just about anywhere downtown now. They have become very common. I will note that I haven’t seen too many people wearing them around though. Wait for sale time people, it’s coming.