I used to buy the 36 packs of bottled water at the grocery store, and I try to stay hydrated and at $4 a pack, I went through quite a bit (plus created a lot of plastic waste, as there isn’t easy recycling in my area). Switched to Brita a few months ago and haven’t looked back. The filters stay good for about 3 months and the price on this pack is definitely a good deal (and tastes better!) than bottled water. Cheaper on Amazon than in store too. I’ll be back in quite a few months ordering some more.