Look at Tech Enclave or FB marketplace or FB groups like Akextacy, etc.
3080 10GB is indeed around 30k or above. Do not buy 3070Ti. 3070 is going for under 25k. 3070Ti is barely 10% faster, it was a bad card to begin with, at least should have had 10GB VRAM.
www.facebook.com/groups/akextacy
www.facebook.com/groups/563181774532516/
www.facebook.com/groups/secondhandcomponent