While I won’t argue that about subscriptions, Canadians actually pay more after the currency exchange than normal. We pay an additional $2 per month more (which I’ve not yet seen explained as it’s $2 more than the exchange rate comparatively) unless we use a subscription. So a 1-month sub for a Canadian is $18.99, but a 1-month block of game time is $21.99.
Where as, a 1-month sub $14.99 in USD is the same as a 1-month block of time $14.99 USD.
Note: Current exchange rate as of posting this would make $14.99 USD = $18.91 Canadian