Me as german citizen would be interested to know how much such processes costs from our taxes money. From bringing such law again to debate, convicting the parl

Me as german citizen would be interested to know how much such processes costs from our taxes money. From bringing such law again to debate, convicting the parlament to vote it, then approving it, then the whole courts costs... I'm not sure why at least once a year we see that there.. regardless of who is in the government.. Is it Lobby driven?