I will be leaning to as high as 1 million PPV to as low as 750,000 buy. I think Ryan can bring this kind of money in his fight right now, last fight is not PPV against Duarte, but he has set the record with Tank Davis last year with 1.2 million PPV.
This could be the range, as they are not that popular, or the fight is the unification fight. I think Pacman vs Mayweather PPV was around $80-90, so your speculation is quite on point.
Regarding the PPV total revenue, last time Ryan fought, which was against Tank Davis, they were able to sell 1.2 million PPV, so 1 million is quite realistic. But this might not break that fight since Tank Davis has a different appeal, being a KO artist, exciting to watch in the ring.
https://www.cbssports.com/boxing/news/gervonta-davis-vs-ryan-garcia-fight-pay-per-view-numbers-live-gate-exceed-expectations-in-las-vegas/
There's a possibility that this fight will go near that number or even break it, this fight is four years in the making
Here is the video of that thrash-talking
~snip~~~
I would be happy if it breaks the record of Garcia vs. Davis, but I want to stay realistic. This is no longer an undefeated Ryan Garcia who will be fighting Haney, so people now might think that Ryan has a slim chance of winning.
Betting odds during that time: Ryan Garcia +190 Odds now vs. Haney: Ryan Garcia +320
We can see the significant difference, implying his slim chance, according to the bookmakers.