While it’s easy to get starstruck by its Pro sibling, the OnePlus 9 is a capable alternative at a lower cost. You’re looking at quite a gap, especially in the US where (for some unknown reason), the base 8/128 GB version of the 9 Pro is not available. This means you can have the vanilla phone for $730 or the 12/256 GB Pro for $1,070. Availability issues cut the other way in Europe. The OnePlus 9 (priced €700) is coming soon and you have to put in a €100 deposit to reserve a place in the queue. Actual sales will start in 13 days. In contrast, the OnePlus 9 Pro (€900) is ready to ship in 24...
Source: https://www.gsmarena.com/our_oneplus_9_video_review_is_out-news-48531.php