Amazon has the Apple Watch Series 3 38mm GPS Aluminum Smart Watch w/ Sport Band (Silver Case/White, MTEY2LL/A) for $170 with free shipping. List price: $279. Features S3 dual-core processor that enables Siri to talk on your watch, 1.5" 340x272 OLED display, 8GB internal storage, 802.11n wireless & Bluetooth 4.2, heart rate sensor & altimeter, watchOS 5. Has excellent Amazon Reviews.
Walmart has the Apple Watch Series 3 38mm GPS + 4G Smartwatch (White, Silver, MTGG2LL/A) for $199 with free shipping. List price: $379. Features GPS and a barometric altimeter track how far and high you go, dual-core processor for faster app performance, swimproof, ultimate sports watch and intelligent activity tracker.
Walmart has the Garmin Vivoactive 3 GPS Fitness Smartwatch (White, 010-01769-21) for $149.99 - $1.71 off with in-store pickup discount = $148.28. Features 15 preloaded GPS and indoor sports apps, Garmin Pay contactless payment