[Tristan Lall]

I've never had a problem getting McMaster-Carr to ship to Canada; I've ordered plenty of stuff from them over the course of many years.

They typically ship via Purolator next day; they can typically ship almost immediately for in-stock orders placed earlier than 14:00 ET. They will add shipping (includes customs brokerage; usually extremely reasonable shipping costs), duty (when applicable; they usually will inform you and remove items subject to prohibitive duties, unless you reconfirm) and Canadian tax to your order, after you submit it.

They take Canadian and American credit cards; they can also operate on net 30 days payment terms, but I don't know if they'll do that for a new Canadian customer.