Amazon has these all currently marked down to their lowest ever on Amazon!
Apple Watch Series 5 (GPS, 40mm): $279
Apple Watch Series 5 (GPS, 44mm): $329
Apple Watch Series 5 (GPS, 40mm) with AppleCare+: $378
Apple Watch Series 5 (GPS + Cellular, 44mm): $429
Apple Watch Series 5 (GPS + Cellular, 40mm) with AppleCare+ : $478