Hi!
I present to your attention a plugin for creating sets of goods at a discount.

Demo (admin) / Demo (front)
access: demo / demo

The module allows you to create different sets of products (up to 4 pcs.) And apply different variations of discounts to them. At the moment there is support for these types of discounts:

A set with a fixed discount - a new price will be assigned for the whole set, i.e. All products in the set, the user can buy at a fixed price.

A set with a dynamic discount - the cost of dialing will be floating. In this set, the discount amount is set individually for each product. At the moment when the user is on the product page from the set, the discount price will be displayed for all products that are included in the set, with the exception of the currently viewed product.

The widget with the sets is displayed on the product page. In future versions it is planned to develop the functionality of displaying the widget in any arbitrary location.
 
The number of sets is unlimited.
For each item in the set, the quantity that is minimally needed in the basket to receive the discount and the amount of the discount in the currency of the store are set (optionally, a discount can be set for all the goods in the basket or for each of them).
 
The discount can be of two types:
Fixed discount - specify the amount of the discount in the currency of the store
Percentage discount - indicates the percentage of the amount.