I PM'd the OP (doncha just love acronyms!)
I've bought specialty chems from the Formulary for emulsion work - their quality is excellent.
For moderate quantities of off-the-shelf chemicals, New Horizon Scientific in B.C. have been very helpful - and they are super nice to deal with.
If found Canadawide Scientific to be overpriced on many items - they would not be my first choice.
For bulk purch of several kilos of "common" chems like hydroquinone, hypo, KBr etc. there are some distributors in Montreal that might be worth looking at.
I'd be interested in participating in a group/bulk purchase.