Register for the Insiders Product Testing. They frequently have campaigns with major companies where you can participate in product testing. They have had tests with various Samsung products recently where you can get their products such as Dishwashers, Refrigerators, and more, but will require you to purchase it at a significant discount. Other campaigns on the Insiders are completely free. You’ll have to check their page frequently to see if they have new offers, and to apply for them click the subscribe button and fill out their survey.
UPDATE: They have a new campaign available that include: Seventh Generation Aluminum-free Deodorant and Body Wash