By buying in bulk directly from suppliers, they could negotiate prices, which allowed all of them to buy stuff they couldn't otherwise afford. They ran the store collectively and democratically, which was remarkable at the time.
Al comprar a granel directamente de los proveedores, podían negociar el precio, lo cual los permitían comprar cosas que no podrían comprar si no. Operaban la tienda colectivamente y democráticamente, lo cual era increíble entonces.