Yeah sure. Some companies do this sometimes. It could be useful market data to shape the product to be launched. Not all companies do this. Most big companies don't even do this.I think sampling could also be used to get research and marketing data from the customers. For example, you may provide free samples along with a questionnaire to the customers and ask them to rate the products and provide their feedback about the products. This will help you to get a better image of your product in the eyes of the customer.