What is Reddit's opinion of Conspiracy?
From 3.5 billion Reddit comments

By popularity on Reddit, this product is:

#661 in Movies

#252 in Drama

I have it on my Plex server, it is available on Amazon Prime if you have a Prime membership for free, along with a ton of other HBO content.

The made for TV movie Conspiracy staring Kenneth Branagh and Stanley Tucci. It is about the Wannsee conference. Similar format and very well acted. Free on Amazon Prime: https://www.amazon.com/Conspiracy-Kenneth-Branagh/dp/B00KG2QO2K/ref=sr_1_1?keywords=conspiracy+movie&qid=1576355480&sr=8-1

looks like Amazon has it:

Good trailer for it hosted there too

< $25

< $25

< $50