Ends 10/20. Amazon has the Portocam T17 1080p Dash Cam for $35 - $19 off with coupon T17OFF55 = $16 with free shipping. Features 1.5" LCD, 140° wide-angle lens, G-sensor and loop recording, night vision, microSD card slot.
Ends 10/20. Amazon has the Wonnie WN-US-IPCBL 1080p Wireless IP Camera (Black or White) for $37 - $19 off with coupon KVCS7BNH = $19 with free shipping. Features 1080p video recording at 25fps, night vision up to 33 feet & motion detection, 2-way audio, 345° pan & 120° tilt, microSD card slot.
Amazon has the YI 4K Sports and Action Video Camera (YI-90001; White Pearl) for $122 with free shipping. Retail price: $250. Features 12M photos, 2.19" LCD Gorilla Glass Retina touchscreen, 3840x2160 video, WiFi 802.11a/b/g/n, 1400mAh battery.
Has good Amazon Reviews.