Each Купоны Booklya has a different expiration time, you can select акции Booklya you want to use to redeem the discounts when making the payment. There are also some Booklya коды скидок that have a limited range of use, so you should also use it within the range. Such as a certain type of products, when the type of product has been sold out, then your Купоны Booklya is invalid.