eBay has the Apple iPhone 6s 16GB GSM Unlocked Smartphone (several colors) refurbished for $170 with free shipping. Features 4.7" Retina HD display w/ 3D touch, A9 chip, 12MP iSight camera, 4K video (2160p), 802.11a/b/g/n/ac with MIMO, BT 4.2, iCloud, iOS 9.
Has good Amazon Reviews.
eBay has the Unlocked Apple iPhone 6s 64GB Smartphone(Gold, Rose Gold, Silver or Space Gray) refurbished for $208 with free shipping. Features Apple A9 64-bit, M9 motion chip, 750 x 1334 pixels, 326 ppi approx., 16.7 million colors (24-bit), 5 megapixel front camera, back camera: 12+ megapixel auto-focus, f/2.2 lens, dual-tone flash / panorama, auto HDR, Live Photos, face detection.
Walmart has the Unlocked Motorola Moto G5S Plus 64GB 4G Smartphone (Blush Gold, XT1806) for $250 with free shipping. Features 5.5" IPS LCD 1920x1080 (1080p) touchscreen, Qualcomm Snapdragon 625 2.0GHz octa-core processor, 64GB internal storage and 4GB RAM, 8MP front-facing camera and dual 13MP rear-facing cameras, Android 7.1 (Nougat).
Amazon has the BLU Pure View -32GB +3GB RAM, 5.7” HD+ 18:9 Display Smartphone with Dual Front Selfie Cameras (black, P0050WW) for $130 with free shipping. Retail price: $200. Features 5.7" HD+ 18:9 widescreen curved glass display with Corning Gorilla Glass 3, 13MP Main Camera with flash + Dual front selfie Camera: 8MP + 8MP 120 degree wide angle with flash, 32GB Internal memory 3GB RAM Micro SD up to 64GB; powerful 1.3GHz Octa core Mediatek 6753 processor with Mali-T720.
eBay has the Samsung Galaxy S9 Dual SIM Unlocked 64GB 5.8" Smartphone, 2018 model (Midnight Black or Titanum Gray) for $600 with free shipping. Features Exynos 9810 Octa-Core CPU, 4GB RAM, 64GB storage, 5.8" AMOLED (2960 x 1440), 12MP cam, 802.11ac, Android 8.0 Oreo.