$3.99 USD per gallon is about $1.43 CAD per litre. I weep, lol. I'm paying $1.96 CAD per litre (about $5.41 USD per gallon). I'm in Alberta, we grow it here. That's relatively cheap compared to some other provinces 😭

Edit: Don't take those numbers as gospel. I'm scrolling on the can, so it may not be my best math.