What type of relationship positive or negative would you expect between the price music videos and sales videos?

I would expect a negative relationship between the price of music videos and sales videos. This is because music videos and sales videos are both used to promote products, and customers are more likely to purchase a product if the promotional video is lower priced. Additionally, music videos and sales videos are often used in conjunction with each other, and customers may be more likely to purchase both products if the prices are lower.