Exclusively for Prime members, Amazon has the Motorola Moto G6 64GB Unlocked 5.7" Android Phone (2018, PAAE0007US) for $160 with free shipping. Features Qualcomm SDM450 Snapdragon 450 Octa-Core, 4GB RAM, 64GB storage, 5.7" IPS (2160 x 1080), fingerprint sensor, dual rear cameras, 802.11b/g/n, BT 4.2.
Has above average Amazon Reviews.
Amazon has the Unlocked Nokia 7.1 64GB GSM Android Smartphone (Blue) for $299 with free shipping. Features 5.84" 2280x1080 IPS touchscreen, 1.8GHz Snapdragon 636 8-core processor, 4GB RAM, 64GB internal storage, dual 12MP + 5MP rear cameras, 8MP front camera, fingerprint sensor, Android 8.1 (Oreo).
Walmart sells it for the same price.
Walmart has the Apple iPhone 6s 32GB Prepaid Smartphone (Gray or Rose Gold, WAPI6SC32GYV2P.2) for $150 with free shipping. List price: $299. Features CDMA-V4.7" Retina HD display, 2MP camera with 4K video at 30 fps5MP, Touch ID for secure authentication and Apple PayA9 chip.
Walmart has the Apple iPhone 6s Plus 32GB Prepaid Smartphone for Straight Talk (Gray) for $200 with free shipping.
eBay has the Samsung Unlocked Galaxy S8 64GB Android Phone (several colors) refurbished for $200 with free shipping. List price: $720. Features Qualcomm Snapdragon 835 8-core processor, 5.8" 2960x1440 Super AMOLED touchscreen LCD, 4GB RAM & 64GB internal storage, 12MP rear and 8MP front cameras & 4K video recording, 802.11ac wireless & Bluetooth 5.0, microSD card slot, Android 7.0 (Nougat).
For its Prime members only, Amazon has the Motorola Moto X4 Unlocked 32GB 5.2" Smartphone (Black or Blue) for $130 with free shipping. Retail price: $400. Features Qualcomm Snapdragon 630 2.2GHz Octa-core, 3GB RAM, 32GB storage, 5.2" FHD IPS (1920x1080), 12MP+8MP dual rear camera, 16MP front camera, 802.11ac, 4G LTE, Bluetooth 5.0, microSD (up to 256GB), Android 7.1 (Nougat).
Has good Amazon Reviews.