As I said in the other thread, welcome to APUG.
There may actually be someone from APUG nearby (Edmonton) who you could talk to to help you with this stuff.
I buy from a variety of sources, including KEH, but because I am just minutes from a border crossing, I have the option of having items shipped to my US mailing address. For that reason KEH is great for me.
Most likely you won't have to pay duty if you import something using KEH, but you will have to pay shipping and GST, and as KEH seems to insist on using UPS or Fedex, you will often get hit with their (UPS or FEDEX's) outrageous "brokerage" charges.
I've had a look at the Alberta Craigslist sites - for photographic stuff, it seems clear that Vancouver is way better. I don't know whether Kijiji is any better. That being said you might want to consider posting a WTB listing for a hand meter.
The 124G has a waist-level finder and a fixed lens - Lyle's listing looks to be the sort of thing you are looking for.
You might consider looking at some of the camera instruction manuals on Mike Butkus' excellent website, butkus.org. The manual there for the Yashica 124G takes you through the operation of that camera, and may very well give you some perspective on many of these issues.