93 is "harder" to get for the stations here, and only two in the entire city sell it as a result.
One is full service and no pay at the pump option (krusty old guy running a two pump service station). The other is a normal shell station that is in a "ritzier" part of OKC, lol as comical as that sounds. Basically everyone who needs 93 drives across town to get it. It's about a 7 mile drive for me.