What is the price to enter a mosque?

Entering a mosque is free. Be aware that you can’t wear shoes in a mosque. Socks are allowed and most mosques doesn’t want people without socks inside the mosque, because of smell and wet foots (muslims washs their foots during a small wash before they do a pray in the mosque). You can get in a mosque without doing a small wash.

A mosque in muslim countries mostly belong to the government and gets their finances from the government. Giving charity is mostly possible.

Non governmental mosques gets their money from monthly or annually charity gifts from their main visitors.