<prompt> Human: We are a family of 4 and our kids ages are 3 potty trained and 1 still in diapers. Our budget is 200 per week for groceries and gas. But rarely do we ever hit that and never go over. My question is, is getting a Costco card and making the extra trip there worth it? I mention only having one kid in diapers because i hear people say thats the reason they go there but Target store brands diapers are good quality and still cheaper than what you would get at Costco.  <response>: For larger families it seems to work well. Most club stores let you go in without a card to just look around and see if you want to join. Personally the savings in gas for me And its good top tier gas nearly pays for itself. 