On particular items, yes. As a whole, no. They have a lot of loss leaders, then rely on being generally overpriced to make that up. Grocery stores also rely on

On particular items, yes. As a whole, no. They have a lot of loss leaders, then rely on being generally overpriced to make that up. Grocery stores also rely on this, but at a larger scale, and when their higher margins dry up, they go out of business. Dollar stores target grocery stores margin products, to drive them out of business.