money-back guarantee

Translations
гарантия возврата денег
Someone can return the product within 30 days if they are not satisfied, thanks to the money-back guarantee.
Кто-то может вернуть товар в течение 30 дней, если он не удовлетворён, благодаря гарантии возврата денег.
Definitions
A money-back guarantee is a promise made by a seller to refund the purchase price to a buyer if the product or service does not meet certain expectations or standards, typically within a specified time frame.