My retired husband bought our Keurig coffee maker for Valentines about 7 years ago. He drank much coffee, I only had a cup before going to work each day. I finally retired two years ago and still have my one cup each morning plus maybe one at night. Living alone, I don't use that many filters. But buying Keurig filters in packs of 6 STILL is the best bargain. Our local water is ''hard'' water (whatever that is) and I know filtering all water is best.