For the past two years, I've been buying the President's Choice big (900g?) chocolate bars at Loblaws. They're convenient to find, good quality (French chocolate) and the bittersweet bar doesn't have milk in it -- our family is avoiding dairy.
The price that I usually remember in Loblaws stores is $4.99, and I've seen it down to $3.99 at Christmas time, and at No Frills stores. I was at No Frills (Carlaw north of Gerrard) today, and the bar was $5.49.
We don't go through that much chocolate -- we just keep it on the shelf, and break off a hunk when we need it, so the huge bar may last a month or two when we don't have great cravings.
The President's Choice bar may (or not be) still be a great deal, but I thought I would check with other chowhounds on what they do for everyday chocolate. I'm not talking about going to a chocolatier or speciality store, and I'm also not talking about candy bars. Dark chocolate is harder to find than milk chocolate.