I'm using version 1.3.8.

We would like to boost our sales volume by encouraging our customers to purchase a product that actually consist 3 items. However, the customer will have the freedom to choose the combination of the 3 items they want within a choice of 100 items. Is it possible to accomplish this without adding a contribution? The 100 choices of items do not need to have a listed price, however, the customer should be able to see images and details for each of the 100 items.

In short, the customer is able to pick, for example, any 3 different products for a fixed amount of $18. Is there a smart way to accomplish this without adding a contribution? If not, is there a contribution available to accomplish this?

We do not want to allow the customers to purchase less than 3 items.

Thank you for anyone's assistance!!