And Walmart ought to know.

Unless things change, Aldi is aiming to have 2,500 stores by the end of 2022 (viaCNN).

And consumers these days, no matter where they are, are looking to save where they can.

Exterior of an Aldi store

Though just because Aldi sells a private label, don’t assume it is second-rate.

There has been a huge change in attitudes in a short space of time," she says.

Gallon jugs of milk in a supermarket

Splashing milk

Jugs of milk in a supermarket