Ebay offers Samsung Galaxy S23 Ultra 512GB Unlocked Android Phantom Black for $409.99 (reg. $1,379.99) with free shipping. 

Product Description:
This is a Samsung Galaxy S23 Ultra smartphone featuring 512GB of internal storage. The device is unlocked for use on any compatible network and is presented in the sophisticated Phantom Black finish. As a flagship Android device, it offers top-tier performance and features.