Shell station at Crabapple corners in Roswell. 100 Octane for about $5/gallon. Intersection of Brimingham Hwy (372) Mid Broadwell and Rucker Rd.
They sometimes turn to pump off so the SUVs won't accidentially fill up, so you may have to go in and tell the dude to turn it on.
Imagine the look on the Soccer mom's face after putting 50 gallons of 100 octane in the Hummer!!
...or better yet Dad's face when she gets home....