What is an example of a sales promotion that does not require a purchase to enter?

A sweepstakes is indeed an example of a sales promotion that does not require a purchase to enter. This type of promotion invites participants to enter their information into a contest, where they have a chance to win a prize based solely on chance, rather than through any transactional activity. The lack of a purchase requirement makes sweepstakes appealing, as they can attract a wide array of participants who may be interested in the prize but are not obligated to buy anything to partake.

In contrast, rebates and discounts directly link savings or returns on purchases, requiring customers to buy a product to benefit from these promotions. Vouchers typically function as discounts that also necessitate a transaction, as they provide a value reduction on a future purchase or service, thereby excluding them from being no-purchase-required promotions.