Hey, I heard that, I've done the exact same, and so have friends of mine. Worked in a gas station myself for a bit, a little Chevron right in front of a one way in, one way out apartment complex. I never went in the complex but a couple times when a dude I was shopping with briefly lived (lives?) there. Based on the clientele that walked up from the apts, I'd say he wasn't the only guy doing biz.
Guy was a weirdo, though, went from being fairly reliable, non nonsense guy to swollen head, " people call me 'Fat' cause my paper" bullshit, but he wasn't fooling anyone and ultimately was just playing around. Last time we did biz, I gave him my and a friend's cash, and we ended up with some sort of smashed up pills, mayefpr nausea or something (it was wrapped in foil, hence not seeing the obviously no good contents).