The gas station in Montrose (between Trail and Fruitvale) has marked premium. Think it's a Racetrak station? I just found out about it recently, have been buying my gas from COOP in Fruitvale. Not sure what octane it is, can try to find out tomorrow on the way home from work.
Right on, I usually buy mine at the co-op as well...cheapest around...just found out as well that the JD dealership in the 'gar sells bulk marked...just need to know someone...