Enable the minicart or full cart to provide the option of selecting one or more complimentary samples when making a specific product purchase. Ensure that the price is displayed, whether it's listed as zero cost or has an actual price. It's crucial to emphasize the psychological aspect of offering a "free" item that actually has a cost associated with it but is presented as complimentary.
Here's how it works: when a customer adds a qualifying product to their cart, they're given the choice to select a free item. The displayed price reflects the actual cost, but upon adding it to the cart, the cost is adjusted to zero.
Styling the minicart is needed, so that free items can show in a carousel kind of way or in a grid depending of style.
