It's been said time again but i feel like it's important to reiterate: Do your research! Don't get into mining because of the hype.
I think nvidia and amd is pumping eth so they know they will sell every one of their gpus for whatever price they will ask for, eliminate gpus like rx 580 and 1070 and pave the way for amazing returns for their new gpus. Idiots will buy 3080 for 2000~3000 usd, idiots back in 2018 bought volta titans
https://www.amazon.com/NVIDIA-TITAN-VOLTA-12GB-VIDEO/dp/B078G1VHYN for 3500 usd for mining.
Why called them idiots? I'm sure every miners buy GPUs based on their mining calculations, what makes you think they never make back their ROI using Titan GPU to mine? People don't just buy without doing research first