Coupons and sales are frequently used marketing tactics for monopolistic competition.
Explanation:
In monopolistic competition, the products that are substitutable are determined within a suitable price range to compete in the industry.
Example: If the price or cost of tea increases above the determined range, then the consumers may switch to coffee.
The market tactics that are frequently used in monopolistic type of market are coupon and sales. Coupons are the documents or tickets that can be used to redeem for a financial discount when a purchase of a product is made.