There was. More AMD cards flooded because they were better at mining IIRC and cheaper.Was there reallly a big crash after the first mining craze? I can't say I remember it was, other than that the availability increased. No dirt cheap cards flooding the second hand market that I can remember.
I’ve picked up a fair amount of used cards since the GTX 7XX series.
A lot of arguments in the FS/FT about whether or not mining cards long term health was compromised.