Where did you order Transfer Factor?

I am one of the people who has talked about it, but never had to order it. Now we need it for a human friend (see http://petoftheday.com/talk/showthre...97752&page=145 post 2165).

Where did your order yours and how much was it? Hoping to find a Canadian supplier, or an fairly inexpensive and quick way to get it.

THANKS!