Green coffee beans are essentially flavorless and remain fresh for an extended period of time - up to 2 years! Once roasted, coffee beans are at their peak of flavor for only a week or two. Home coffee roasting allows you to always have the freshest coffee benas possible. Plus, you can SAVE MONEY by purchasing green beans. Since you do the roasting, green coffee beans are less expensive than roasted - check out the prices below. Your home coffee roaster will pay for itself in no time!