AskHN: Are old-school 1980s/70s discrete and integrated components in demand? I know of a pack-rat with a lot of that-era componentry. Where do people look for

AskHN: Are old-school 1980s/70s discrete and integrated components in demand? I know of a pack-rat with a lot of that-era componentry. Where do people look for sales of private electronics/controllers DIY/learn-it-yourself parts and pieces?