You misunderstand I think. CAD currency is not supported, however Canada has different prices than the USA does although both countries pay in USD. So for example, the Witcher 3 Hearts of Stone expansion is $9.99 USD in the United States, but it is supposed to be $7.99 USD in Canada. This is GOG's fair pricing policy, so when I pay $7.99 USD for the game right now in USD, that will work out to being approximately $10 CAD. The purpose of this is so that an American pays $10 USD, and a Canadian pays $10 CAD, only they don't accept CAD. Essentially GOG eats the exchange rate.

This is specified in a cookie on the website named "gog_lc", you can view it in Firefox by hitting F12 to bring up the browser console, then go into the configuration menu (gear shaped icon on the right side of the button bar), and enable the view of "Storage", then reload the GOG web page you're viewing, and you should see the website cookies. The one named gog_lc should show up inside the United States as "US_USD_en" which stands for "United States (country), United States Dollar (currency), English (language)". In Canada that cookie is _supposed_ to show up as "CA_USD_en" which means "Canada (country), United States Dollar (currency), English (language)". It is the "Canada" in there that changes the US prices to be lower for Canadians. They use geolocation services provided by Maxmind to determine what country you are in based on your IP address which is then used presumably to set this cookie.

The problem is, that the cookie does not get set correctly nor does it get set consistently from one page load to the next despite the fact that the IP address is static, and the fact that Maxmind consistently identifies it as being a Canadian IP address. The problem is not with the geolocation however because I have made screenshots during promos where the same game showed up visibly on a single web page a few inches apart from itself with one of them showing the American price and the other showing the Canadian price.

There is a bug somewhere in the website code that they can't figure out and can't reproduce on their own, and I may be the only one who has reported it. The problem is that the nature of the bug is so complex and obscure that out of hundreds or maybe even thousands of customers the number of people who ever actually notice the problem is probably going to be very very small to begin with. In order to notice the problem to start with, you have to observe the price of a game and then either see it change before your eyes from one page load to the next and see the problem possibly many times before it clues in that the prices are randomly changing, or you need to see the same game on one web page with two different prices simultaneously... or, you have to know in your own mind what the price is supposed to be in your country for that game and notice that the wrong price is showing. How can you know what the correct price is if the website shows a random price though and you have no way to know? So therefore most people who encounter the bug not only wont know they're encountering it, but they wont have a way to even tell.

Out of the people who do happen to make it that far, how many people have to have that happen before they contact support and even know what to say with any level of technical detail (such as myself)? They're most likely going to be told "you're the first to report this" or similar like I was and it wont be taken too seriously because it can't be reproduced internally, and it's almost impossible to gather enough data to give them to try to diagnose what the problem is because the problem can disappear for a half hour or an hour when you try to diagnose it. It's completely random, and very transient, difficult to debug, and someone attempting to do it outside of GOG only has access to the client side javascript source code and not the server side, with no indication of what or where the problem is occurring. It happens in Firefox, Chrome, Galaxy client, and it happens on multiple computers, and on other IP addresses including other Internet providers.

But... nobody else is reporting it because they're unaware it exists and would have just as much difficulty if not more to try to figure it out or to report it. Since nobody else is reporting it because it is hard to even notice, it's not a priority to try to fix.

So... at least some, if not all Canadians may possibly be seeing higher prices than they should be, and they may or may not be getting charged a higher price for the games they buy also. Some GOG devs did work with me a bit to try to help isolate it and I'm thankful for that, but we didn't end up getting anywhere in the end, and there's not much more I can do on my own here, and I don't want to dedicate endless hours debugging someone else's website for free either. :)

So... it'll just have to remain broken with incorrect prices that nobody realizes are even there. Incidentally I just talked a friend across town on a completely different ISP through trying to reproduce the problem and within a half hour he was able to reproduce it too. It's not something you just load the page up once or twice or even 10 times and then say "oh there it is, I see what you mean". It takes dedication to actively look for it until it happens and only then knowing what you're looking for. The chances of someone casually stumbling upon it are very unlikely IMHO. I only did because I was watching specifically the price of the Witcher addon and over a period of time I started to realize that the price was randomly changing from $7.99 USD to $9.99 USD, including both prices showing up on screen for it at the same time.

Short of opening up a remote desktop session to GOG devs (which I'm totally not comfortable doing for security reasons), I don't think there's anything else I can do without expending a lot of personal time and effort that I don't really want to do unfortunately. And nobody else likely cares because they don't see the problem whether or not they're being affected by it.

Now, I do know what the proper price is for The Witcher 3 stuff so that's how I usually spot the problem, but I have no idea when I look at all the other games whether the price I'm seeing is correct or not and that really harms my personal experience on the site because I actually know the prices are fluctuating before my eyes. Others are likely experiencing the same problem but are just blissfully unaware it's happening as described above.

I really hope they find the problem and fix it though, but there doesn't seem to be incentive to spend much time tracking the problem down with one person reporting it, and likewise there's not a lot of incentive for someone experiencing it to track it down with nobody able to fix it. :)

So if there's something I'd actually want to buy happening, I'll have to just smash reload endlessly, manually edit the cookie to read CA_USD_en and hope it sticks until the site displays the price of the Witcher 3 right, then pray the rest of the prices are showing correct to. I'll only bother going to that level if the game is a great deal I don't want to miss though.

My deeper concern though isn't just about how the problem is affecting me, but how it could be affecting other people maybe even in other countries in a way that everyone is blissfully unaware.

It'd be nice if there was a static page or pages on the site somewhere that you could go view the exact prices for all the games for each value of gog_lc all in a spreadsheet or something.

Either way, it's pretty frustrating. To be honest, I actually wish I never even noticed and could just be blissfully unaware like everyone else.