The currency is worth 30% of a U.S. dollar but the cost of living is also significantly lower, so to a person living in either country $600 feels like about the same amount of money.
[1] Guess but not complete wild-guess multipliers
The ideal situation is you get a remote job in Canada for 1x salary and live in a nice place with 0.3x houses. That is my current setup.
You can look at random things like groceries, homes or car insurance to see that this isn't really true. 600 USD (or even 600 CAD) goes a heck of a lot further in most of the USA.