Bought 91 for $1.22 last week. Bought it for $1.26 this week. Carbon tax paid.
Before the $1.26, I had pulled up to another station. When I saw $1.14 on their pump for regular, but $1.37 for 91, I laughed and went to the next station ($1.11 regular, $1.26 91).
Some places just gouge more than others.