Edited March 8, 2021
at 12:20 PM
The highly-reviewed OnePlus 8 Pro with 256GB storage / 12 GB RAM version in Blue or Black is now available at their website for $599.99 with coupon code 8PRO100OFF. Note you have to create an account, log in and input your shipping address first, and can then get the discount via the "Voucher" link.
OTOH, the new OnePlus 9 is due out in two weeks, so people may want to wait.
EDIT: Sold out in black.