If it was like last time (2018), prices remained higher than what they should have been for months after. Then Nvidia got the message about how much people were willing to spend on GPUs, and overpriced their RTX 2000 cards.
Even if the big crash that kills GPU prices happen, I'll probably still have to go second hand, since a brand new, better GPU than the one I have will still go for (albeit less) ludicrous prices.