eBay with Microsoft Store has the Samsung Galaxy Note 10 Plus 256GB Unlocked SM-N975 6.3" Android Smartphone with S Pen, 2019 U.S. model (Aura Black, SM-N975UZKAXAA) for $650 with free shipping.

Qualcomm Snapdragon 855 2.9GHz Octa-Core, 12GB RAM, 256GB storage

6.8" AMOLED (3040x1440), facial recognition, wireless charging

Triple rear camera (12MP+12MP+16MP), Android 9.0 Pie