I live alone, so bulk buying is not always a bargain for me. And storage is another big problem. Son #1 has a contractor's license and is able to buy a lot of household products that are of commercial grade at a much lower price than I would pay at a box store. He uses his license even for electronics. He payed a much lower price for both my large monitor and large screen TV than he would have paid at a box store. He buys household cleaning products in five gallon sizes and we split them between us. He uses his supply up quicker than I do as he uses his on the job as well as home. He recently had to purchase toilet paper for some apartments that had just been remodeled. He bought a carton full. Forty-eight rolls. He only needed 10 rolls. I am now up to my ears in toilet paper. I am afraid to mention when I will need more paper towels. I also have 100 heavy duty green trash bags. I don't use napkins. Paper towels instead. I once bought 100 napkins. Lasted me for more than a year.
So if I didn't have my son's license to rely on, I would probably buy household products in a box store. We have a BJ's just down the road from me. I could go there on my scooter. But then how would I get them home?