VIP Pilot shop in St. Hubert, just outside Montreal proper, is an excellent source for anything aviation. Have used them in the past for headsets to VFR maps and most things in between. They do provide 24 hour service included in the price, if memeory serves correctly. Regardless, good shop to deal with.
As for plates on the net, that'd be the the cats ass!! If you find a website, please let us all know. Otherwise what you might want to try, if you are alright with using Jepp Charts, is if you know anyone that uses JeppView, have them print you off the plates for you. They are different then the CAP's and can sometimes be information overload, but you'll get use to them.
Hope it works for you.
Joe