In response to many questions here are some suppliers of discs for Eurofans. In addition to these suppliers, one more suggestion is to contact your local fan club. They will know about suppliers closer to you. Also go to record fairs. 'Record Collector' is a good source of dates for these, and rarities are often to be found.
Please note, I am in no way connected with these, nor am I responsible for their non-delivery, or anything else, blah, blah, ..you get the idea?
In no particular order:
Hoping to bring it back fully soon
Trehantiri specialise in Greek records, of all types, and can get the
Greek and Cyprus entries of the past, plus some of the Greek
compilations that exist (1985 for instance).
The shop is jammed with stuff, but they do mail order.
And before you ask...
There are no commercially available videos of past contests.
However, the fans often have collected old videos, and if you join a fan club, you will find people who can offer you videos of old contests.