There are many channels wherein you could purchase the PPV the official way. You could refer to the channels list and media streaming services list that we’ve mentioned before. Keep in mind that when you purchase the PPV from the US provider, it can cost more expensive. You might want to explore the cheaper options from different countries. For instance, Singapore provider offers more reasonable PPV rates. However, you will need to use your VPN service to get the location of Singapore so that you can order as Singapore IP client.
Unfortunately, you won’t be able to watch UFC 252 in the BT Sport. Perhaps you haven’t known this yet; the BT spokesperson confirmed that BT company would end the relationship with the UFC on December 3rd. That means BT Sports will no longer broadcast the UFC events on the channel. The UFC 252 event happens on Saturday, 15 August, 2020. But you can still purchase the PPV through the service.