have you honestly never seen a cashierless gas station? you suggest that convenience store is profit center, but as you say, those have to be staffed. what do the numbers look like if it's just gas with cashless pumps and no staff? then, raise the rates of the fuel because "shortages", and I can see it being profitable for less headache. i can think of at least 3 of these stations within 20 miles of me. potentially faster turnover as you don't have people parking at the pump while they spend 15 mins inside. there's a lot of interesting positive aspects to this, and it seems that more are willing to try it.