by charging huge markup on per unit cost by reducing quantity. 3 pills of Tylenol for example for $1 instead of a bottle which may have dozens for $6 . The brands create special mini-sized packages specifically for dollar stores. Big business.
Next time your in your local Hispanic or Asian market, go and see what those same beans cost. It won’t be anywhere near the price of Safeway or Wholefoods.
My local Whole Foods charges $0.89 for a 15oz can.
When I go to Costco I definitely have my guard down and don’t vet and don’t scrutinize each product as much as i would do at other stores.
For example: https://www.costco.com/theradome-evo-laser-hair-growth-devic...