bait and switch

Translations
заманить и подменить
The advertisement was a classic bait and switch tactic.
Реклама была классической тактикой заманить и подменить.
Definitions
A deceptive marketing tactic where a seller advertises a product at a low price to attract customers, but then, once the customer is engaged, the seller either does not provide the advertised product or offers a different, often more expensive, product instead.
Words
bait

noun
приманка
and

conjunction
и
switch

noun
подмена