If they want someone with a bachelor for a cashier job, they are damn stupid. They want someone very overqualified? The manager obviously doesn't know anything about hiring. You don't use a bachelor for a cashier job, even worse, they specify ANY bachelor. What in the living hell? It's like the manager doesn't know how the world works.
College degrees are and will always be important, in the digital age you can learn a lot from the internet, but attending at college and showing the HR your degree for a real company (not talking about cashier jobs here) will get you a much better chance of being hired with a much larger wage than someone without a degree.