B&H Photo Video has 128GB OnePlus 6T T-Mobile GSM/CDMA Unlocked Smartphone (Mirror Black, A6013) on sale for $299. Shipping is free. Thanks Firehunter606
Note, this device is compatible with T-Mobile, AT&T, Verizon and most other non-Sprint services.
Specs6.41" 2340x1080 AMOLED DisplayQualcomm Snapdragon 845 Octa-core Processor8GB RAM128GB Internal StorageCameras: 16MP (wide) OIS / 20MP (16MP effective) Dual Rear; 16MP FrontFingerprint Sensor (under-display, optical)802.11ac WiFi / Bluetooth 5.0 / NFCUSB 2.0 Type C port3700mAh BatteryAndroid 9.0 Pie (OxygenOS), upgradable to Android 10