This is live on the site as of 2017. You can choose your currency in the upper right corner of every page and that currency selection goes with you navigate the site.
Thanks for this feedback. I'll see how voting on this goes and look into some way to convert prices for users. In the mean time you can convert any price we have with other sites (google search "30 usd in cad" for example).
It is not live on the "my cost" part. Please add it. All the prices that I paid for my games are wrong because they are in US... so annoying... For example if I write 50 for 50 CDN it will appear as 76 CDN om "my cost" (price paid)
I've created a new issue for this since this initial issue is closed.
Customer support service by UserEcho