I think BJ's might have a store brand which is significantly cheaper but I'm not sure as I haven't used them, but a friend did. I think she said diaper prices were around .10 each. I do have a Costco membership though and I do not use them for diapers. I don't think their prices are much cheaper than what I can do with sales and coupons. I used to use Pampers (which they didn't stock) and I got better deals by using combining coupons and sales. Currently, I use 7th generation diapers and get them through Amazon subscribe and save which is the best consistent deal for these more expensive diapers. So, if you have the time to watch the sales and collect coupons, I think you'd do better at CVS and TRU sales.