We don't have a proper hobby store in my country. Actually I was dropped running games because of irresponsibility of my latest players. Then, a big demand appeared and everyone was asking if I run any D&D and if there's any room. Then I started to say that I could only run games for income. And it's been 2 years since I started it. I know that in US, people take around 5$ for a session, per player. But I don't know the details. Never tried myself, and I have only seen game announces on Roll20 and Fantasy Grounds forums. Also, a platform called demiplane has some options about it, it also has some feedback and recommendation system.