f95zone is primarily a piracy site despite some people posting their own games there(usually people who get their income from patreon or similar.) Black Lilith does not release their games for free (except for Action Taimanin but that is riddled with microtransactions) and they do not post their own games on f95zone.
https://dlsoft.dmm.co.jp/detail/inf_0154/?i3_ord=2&i3_ref=search For example Taimanin Asagi 3 is currently around 5000 Yen which equals around 36 USD.
Just because someone has posted their game on a piracy site does not mean that they are giving their games away.
Most Black Lilith games are between 20 to 35 USD