Earlier quoted context omitted.
How often do you need to buy dishes, cups and socks?
"Buy once cry once" only works when you have money. If all you can afford are dollar store socks, you're going to be buying a lot of dollar store socks. Being poor sucks.
The cheapest things being the most cost effective uncommon for goods that are consumable due to long term wear and tear. You need to actually run the analysis for any given class of product.