yes – I NEVER understood it. I mean, how come people don’t just turn back time, so that people don’t get killed? Even if they are rare, McGonagall was able to get one for a student….surely it wasn’t the ONLY timeturner in the entire world!
It was. The Ministry of Magic’s entire supply got broken in the battle.
(‘?’ ??? ?) – and before that people were very wary of messing with time, due to various unforeseen circumstances (‘?’ ??? ?).