Please answer a question about the following article about Age of Enlightenment:

In addition to debates on religion, societies discussed issues such as politics and the role of women. It is important to note, however, that the critical subject matter of these debates did not necessarily translate into opposition to the government. In other words, the results of the debate quite frequently upheld the status quo. From a historical standpoint, one of the most important features of the debating society was their openness to the public; women attended and even participated in almost every debating society, which were likewise open to all classes providing they could pay the entrance fee. Once inside, spectators were able to participate in a largely egalitarian form of sociability that helped spread Enlightenment ideas.

Were debates only open to certain economic classes, or could all attend?
all classes providing they could pay the entrance fee