Establishing a bulk price is useful for those products that are not sold by units, but by weight, size or have other conditions that may fit this classification.
To establish that a product that is sold by weight (in bulk), the product must be configured for this, it must be established a price per kilogram or liter, etc ...
To establish the price and quantity, we must go to Catalog> Products> Oranges (BULK)> Pricing.
Example: Establish a price of 2 Euro / kg (tax excluded) for Oranges in Bulk