You don't seem to understand math. No, $10 is more than the hourly wage for the average unskilled worker, but it's beside the point.
You are aware the minimum wage in Ohio is now $10.10 an hour, right? And where this sandwich is being sold has a minimum wage of nearly $16 an hour?
And guessing if its anything like here, there aren't a lot of jobs only paying minimum wage at the moment - why would you when the market is paying well above that?