[vtbose]

Selection. The brands we are used to is not always offered @ Costco. However, it seems to be much easier to subsidize membership costs with Costco, than with Amazon Prime.

[aroch]

There isn't that much variation in diaper and formula across brands...

[jasonlotito]

In diapers? Yes, there is.

As for Formula? You can't just change to whatever is cheapest that week.

[aroch]

Meaningful change in diapers? Not really.

Then stock up, and seriously? Their shelf stocking doesn't work that way. Any SKU ordered (other than food stuffs and specialty seasonals) are stocked for, at least, one month in any given location before long term stocking is decided on

[jasonlotito]

> Meaningful change in diapers? Not really.

My experience is otherwise. Maybe in your experience through multiple brands is that they are all the same, but your experience is equally limited.

The simple fact that my experience says otherwise, however, does disprove yours.

> Then stock up

On diapers?

I can't believe you have children and would "stock up" on diapers. Kids grow.