I paid under $3/gallon at an ARCO station last week in Anaheim. La Palma and Kramer/Glassell.
That station typically has the lowest price around these parts. Sometimes Sams club is cheaper, sometimes not.
I just checked gas buddy, that ARCO station is still at $2.99/gallon.
https://www.gasbuddy.com/Station/ARCO/CA/Anaheim/20698
Ironically, there is a shell station across the intersection from that ARCO station and the shell station is charging $3.59/gallon.
Both stations are owned by the same company and are selling the same gas from the same tanks at the same refinery.
60 cents difference because of brand recognition. And people are still willing to go to the shell station because
YOU GET WHAT YOU PAY FOR!