I’ve found an easy way to save $$$’s when making coffee. After making a pot of coffee, leave the filter with the grounds in the machine. When you’re ready to make your next pot, add half as much grounds as you normally would on top of the previously brewed grounds. For your third pot, add about a quarter the normal amount of grounds to the filter. Besides saving money on coffee, you’ll save on coffee filters and the time and energy it takes to dump and wash out the filter several times.