You are right it is more demand in market so cost also increasing in graphic cards. But Samsung company start a project in graphic cards it is very cheap and compact of other graphics cards. So everyone wait for the launching because I am also buy Nvidia cards they give only three months of warranty But I am expecting 1to 2 years warranty so I am eagerly waiting for good potential cards.
Samsung is not going to produce video cards!!!
Samsung is going to make two things that somewhat related to mining:
a) is going to produce chips (not miners) for bitcoin , sha256 mining
b) is going to produce GDDR6 memory but that is an old story, since they started the development back in 2016.
Ethereum switching (as they planned) to PoS probably will end the GPU madness.