Some businesses believe that sending free samples to affiliates is a smart investment because it allows them to give real, hands-on feedback and create more convincing promotions. For instance, a company selling supplements might send out a month's supply so affiliates can share results and build credibility. Other companies avoid this practice because it adds to their costs and they prefer affiliates to promote using the materials already provided, such as product images, testimonials, and sales copy. It often depends on the company's budget and how confident they are in their product's ability to win people over. Do you think offering samples makes affiliate promotions more trustworthy, or can a skilled affiliate still be convincing without trying the product personally?