Absolutely! Think of other plant produce like tomatoes or strawberries. There are different varieties, and the nutrients of whatever dirt they're grown in determine their taste. Cocoa beans are used to make chocolate, and there's certainly a difference between the foil-wrapped, cheap holiday candy and Godiva or Toblerone. And what about the quality continuum with wine, whiskey, and beer? HOWEVER, do not let any of this deter you from enjoying - and being satisfied - with "generic" coffee. As I've explained in my hub "The Coffee of a Lifetime", the enjoyment of coffee is about so much more than just the beans. You wouldn't NOT enjoy a kiss unless it came from a supermodel, right?
I love my coffee, and I can discern a respectable range of quality in the beans and the brew, but people who make a big fuss over their coffee - that it MUST be a certain brand or bean, or brewed a certain way - are just pretentious pains in the neck.
Beyond the beans, the water makes a huge difference. Starbucks stores have good filtration systems, which is the biggest reason why it tastes different from the store or made at home.
Lastly, the practice of storing beans in the freezer is a misguided myth. First, because of condensation inside the container, they'll absorb moisture, or because of being in the freezer, they'll get "freezer-burned", which is just cold temperature dehydration. Secondly, people put the beans in the freezer to store them for "up to 6 months" - whoever heard of such a thing? I mean, coffee beans, in MY house, not being used up within SIX MONTHS? Pffffttt.