I tend to buy in buik - but only if the item is on sale. My local grocery store often has a BOGO or even better buy 2 get 3 special. I take advantage of that and here's the kicker, because I have coffee or whatever I bought last month on super sale - I can wait for it to go on super sale again. Most stores have a routine to their sales. I always stock up on coffee & ice cream. Because they both keep well in a freezer.