I think third party sellers is a huge mistake... I will usually tick store only sales, but Amazon co-mingles inventory making the problem worse.

im from europe and never seen wallmart in my life, but i wonder why are people commenting on POS system ? how is this related to your experience as a customer ? Do you mean POS system when doing self-checkout or something else? i'd be curious to know what you mean by that or by "no large store with any passable POS in brazil" ? thank you.

With regard to the Sonae buyout, the old POS had more options. You could even pay your bills or buy cellphone credits. The new one didn't even accept payments from the state bank (AliExpress, from the other side of the world is integrated into the state bank of Rio Grande do Sul).

It seems that WM just goes into markets with not enough planning.

Usually, the cashier line size is determined by the quality of the POS.