The 107-key behemoth 4704 keyboard (not technically an F, but capacitive buckling spring, with metal shell - the big sibling of the Kishsaver) shipped from Texas to Ontario via USPS for around 30 bucks (if that).
There is absolutely no reason to use a flat rate box for these things other than not wanting to put forth the effort.
As for you, JPG, you will find what you want. Something worth noting though, there's an eBay seller that often has dumb terminal stuff listed who's in Montreal IIRC - might be worth investigating. They can likely get their hands on one.
Also, if you have a Canadian Tire near you, go and check the various inventory computers - in my local stores they're still running IBM dumb terminals, and yes, they have 122-key terminal Model Fs. If nobody's around, you could try hitting some of the 'typewriter block' (e.g. alphabet) to check the key feel. Don't hit anything other than those keys because there's no real way of knowing what they might be mapped to do in their software.