An illegal tactic in which a seller advertises a product with the intention of persuading customers to purchase a more expensive product. When a seller uses this tactic, they frequently tell the customer that the original product is sold out or no longer available (even if the product is indeed still available), and push hard for the customer to purchase the costlier product. This tactic can be considered false advertising if the seller is not actually providing the original product, but if the item is available but the seller strongly encourages the customer towards another item, in general no legal action can be taken.