The price of video content is the most prominent barrier in front of potential customers. For instance, the average price for video courses can range between $300–$1,500. To decide to pay such an amount is not so simple if you are not sure exactly what is inside. This applies even cheaper video games or other videos.
In other words, the buyer is not certain whether the video contains precisely the knowledge or information that is necessary for him, whether he likes the manner of teaching or submitting and the quality level of the product. For the customer, it would be good to get acquainted with the content before buying.
Promo videos often offered by sellers do not give customers a full picture. As a rule, these videos are executed like an advertisement and can contain good quality and encouraging words, but they do not determine the quality or the actual content of the video that the customer is going to buy.