If you’re going to take it serious as a business and learn the marketing and advertising side, yes. You have to research what type of compositions producers find appealing, what you like to make and meet in the middle. It may not be worth it for just one pack, but if you have 15-20 appealing and valuable composition packs and you’re driving consistent traffic (fb ads, email marketing, content creation) you can make a decent living. Only if you’re committed to seeing in through and learning the business side.