javacentral - The difference is amazing, I still remember the first time I had fresh beans vs store bought, head turner that's for sure, and that was with a blade grinder and a Mr Coffee 12 cup dripper. You sound like you're in the same boat I'm in, small town with no one that roasts beans. You may want to bight the bullet and start ordering online but be careful once you do you will not go back. If you like Dunkin' or want to try something similar, look for some Donut blends, they are close.
ensoluna - I have seen that 15 rule before but I have add to it for someone in my situation, I just can't justify the shipping costs to have 8 or 12 oz packages delivered every couple weeks so I buy two bags usually 12oz or 16oz bags about every 4-6 weeks. To me, 30 or even 60 day off roast beans are better than what I can get in the stores around here. Plus I like to have a couple different type beans to choose from so I can mix it up a bit. I do store the beans in the bags they come in and use little glass jars that hold about a weeks worth to open daily. I do envy you, it sounds like you have access to fresh beans all the time.