If you have an internet radio show, podcast or any other platform for independent artists. You shouldn’t be charging them anything unless you’ve build a platform that garners it. Just like they need to invest in themselves. So do you. Barely any followers on social media and don’t have consistent viewership for your platform. You have no right charging anyone. It’s not the artist responsibility to pay your studio rent. Your job is to build a credible platform that elevates those who go on it.