https://wccftech.com/nvidia-and-amd-gpu-supply-will-remain-grim-in-q1-2021/

It seems that now is a good time to remind everyone that both AMD and NVIDIA are expecting further delays in GPU availability throughout Q1 2020 (via Videocardz). A lot of this has to do with a shortage of materials as well as the impact of COVID as a pandemic but there remains a very large number of variables at play here.

TSMC remains a core bottleneck for GPU production as Samsung has yet to pick up in yields and it really does not help that ETH mining has made a full comeback. Till Ethereium switches to Proof of Stake (which would be sometime this year), you can expect miners to keep gobbling up boatloads of GPUs out of what is available and driving prices up in this scarce supply scenario.