Where can I download or buy dvds of 1980s/1990s Sesame Street?

You can download classic Sesame Street on iTunes :) https://itunes.apple.com/us/tv-season/sesame-street-classics-vol-1/id442528144

I'll also suggest to download na lang. Although sa Astrovision may mga CDs ng Sesame street, not sure if 80's sila.

I'm bad. Torrent na lang! Hahaha