Hi Blair, and welcome to the Community Centre
I checked your listing, and the nightly rate shows at 226 (in Canadian dollars). If I choose random dates, the price is the same. I have no idea if that is correct, as I'm (honestly) too lazy to look up the exchange rate...
That being said, sometimes, when you change your base rate the new price does not populate on every day in your calandar. It's possible that there are quite a few dates that are still set to your old price, so you need to go into the calendar and manually change the price for each date where it's showing incorrectly. This may be the issue.
Best of luck with your listing and I hope you enjoy the experience!