Depends how much time you have. The 'bum deal' app shows you where they ar cheapest- I just use that shop and stock up- however I live near all major supermarkets and cost co, don't mind tarting around for a deal.
The Amazon Prime subscription wouldn't be included in the bum deal app though surely? It seems that the saving might be more as the nappy sizes increase. It looks like you can get 240 size 2 nappies for half the price they would be in asda, even with asda's current discount...
Yes it's worth it. Although price fluctuates so watch out, sometimes they are cheaper than supermarkets and sometimes the supermarket offers are cheaper. I have mine every 2 months and I check the price. If it's gone up then I skip the delivery and buy it from the supermarket
I used it for DC1 and am now using it for twins. I found it saved me time and a little money to have nappies delivered monthly. Sometimes, the price does go up to what you would pay at a major supermarket, so if money is tight, you need to be aware of that. If it wasn't such a faff, I would just stock up on Aldi nappies which are equally good.
Yes, I used to, price does fluctuate but on the whole it’s easier, I live rurally and find it easier just to have a big box on the go. Child one is now potty trained and it hasn’t been even occurred to me to set them up for no.2!