Ice cream and beer would be a bad for me to buy in bulkToilet rolls and washing up liquid I can understand, if you have the space.
On the canned tomato debate: just get passata. It's more expensive but well worth it.
passata is different, often better but not the same thing. I bulk buy that as well. Often it is good to mix the 2, 1 tin passata, 1 tin tomatoes so you get a rich sauce as well as some chunk tomatoes pieces.