Corry El is right: the attendant’s paycheck comes from somewhere. Specifically, it comes from higher gas prices. In fact, I’d argue that the OR/WA numbers constitute a convenient natural experiment to show how the effect mandatory attendants have on the price of gasoline.
Gas stations make surprisingly little from selling gasoline. $0.10/gallon is the typical difference[sup]1[/sup] between what the station pays for gasoline and what consumers pay for it. At today’s US national average of $2.81/gallon, that’s a whopping 3.6% markup. That’s before the station has paid for any of its overhead. In essence, gas stations break even on gas and make their profit on convenience store sales.
Corry El pointed out that Oregon’s gas taxes are $0.15/gallon lower than those in Washington, but GESancMan volunteered that gas is about the same price on both sides of the border. Since overhead and distribution costs are very similar between these two adjacent cities, the Portland, OR stations keep an extra $0.15/gallon that the Vancouver, WA stations send to the state.
Does the presence of an attendant raise the price of gas by about $0.15/gallon? Maybe; let’s figure it out:
If, on a busy-ish day, the Oregon attendant fills up an average of 10 cars per hour with an average of 12 gallons of gasoline per car, that means the Oregon station’s extra $0.15/gallon works out to about $18 per hour:
10 cars * 12 gallons * $0.15 = $18.00
That’s roughly what it costs to employ an attendant in Oregon, who typically makes about $11/hour. Payroll taxes, benefits and training add significantly to the station’s cost for that attendant. Add in slow days and some reduced convenience store revenue (since even cash customers don’t have to pay inside) and $18/hr sounds about right.
So I’d argue that Oregon gas prices are about $0.15 higher than they’d be without mandatory attendants. One can quibble with my numbers, but the cost is unlikely to be less than $0.10/gallon. Hidden costs are still costs.
[sup]1[/sup] The linked article may be from 2008, but gas prices then happened to be about what they are now. What’s more, the economics of gas station operation haven’t shifted radically in the intervening decade…gas margins are still razor thin.