According to the Wrestling Observer the ROH PPV Best in the World 2019 did around 1400 buys. While reporting about Impact Wrestling Slammiversary buyrate at 1500, the Observer noted that some PPV providers stated that there were less than 6 buys in difference between the two PPVs.
Here is the direct excerpt:
At press time, the early estimates of television PPV buys is 1,500. The number is just about identical with that of ROH’s Best in the World show (currently estimated at 1,400 at press time) on 6/28. Counting in buys over the last week for the ROH show, the numbers between the two are so close that in one major cable conglomerate, there were actually only six buys separating the two shows. The big difference is most of the ROH viewership is on its subscription streaming service so you get a better price point, while Impact is all either television PPV or Fite TV, both at the same price, meaning the bulk of viewership would be television PPV.
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