Watching live public cameras is essentially free everywhere, because the streams themselves are published openly. What varies is the experience around the feed: free directories are usually supported by advertising, some platforms reserve extras like archives or ad-free viewing for paying users, and specialist services (construction cameras, for example) are professional products entirely.
WorldEye's model is different: the cameras and the whole live map are free with no signup, and the optional Pro tier (weekly $7.99, monthly $13.99, annual $74.99) pays for intelligence tooling around the map — the OSINT toolkit, maritime and cyber/GDELT intel, satellite imagery view, advanced search filters and the AI analyst — never for more cameras. Pay for a capability you can name, not for access to feeds that are already public.