I don't think that far ahead. They are often a "need it this instant" kind of thing for me.
I walk by them each week in the discount club and if they're on the list I chuck them in the cart. Sort of like paper towels, Kleenex, shampoo and such.
But, othere than clothes and business supplies like toner, and a few niche books from amazon, no one in my family is an Internet shopper. Get something over $ 100 or so and might do some net shopping, but then usually go buy it locally.
Just my way of thinking, maybe, but the net is for convience as much as saving money. When there is a consumable product we use day to day, week to week and there is a reasonably priced store we go to weekly, why spend a hlf hour looking on the net to save $ 5 and then pay shipping for a net savings of zero?
Again, this my dodgy old 67 year old self. I spend many hours a day on a keyboard, but I never even think of buying that sort of thing online.