I always go to 怡昌堂 (address: 685 Somerset West, Bronson & Somerset) to buy ginseng. The owner is very nice and they sell real Canadian Gingseng. The price is very competitive with the stores in Toronto given the same quality of ginseng.
You can trust them. Honest businessman.
The other one beside So Good is not so good. I avoid to buy Ginseng from that store.
P.S. I always put a couple ginseng into chicken soup for the whole family to drink. It is a good Chinese herb. The ginseng bought at 怡昌堂 tastes very good and is comparable with those I bought from Toronto Chinese herbal stores.