Check out location of Alive Health Centres. There's a lot of them in the Lower Mainland but I think the closest one to you is 2929 Barnet Highway. Their pricing works like this:

$1.79 a bar
No tax if you buy 6 or more

Buy a box (you can mix them) and you will save 10% plus no tax. If my calculations are correct that should make it $1.61 a bar.

On the 1st Tuesday (I think) of each month you can get 15% off any regular priced items (including the chocolate). I don't think you get the tax off it in that case, though.

A bit confusing, but I like that you can mix and match the flavours when buying a box. Saving the tax makes a huge difference. I'm not sure if every store has the same pricing policy, but that's how it is at the location I go to.

I think Ross chocolate is as good as it gets (except the raspberry flavour...).

Cheers.