Best Buy has the Vantop HF610T 2.5K Front and Rear Mirror Dash Cam for $80 with free shipping.

• 10" IPS touch screen (1280x320), records 2560 x 1440 at 30fps, night vision
• Auto-records 30-seconds when detecting collision, includes parking monitor function
• Supports up to a 128GB microSDHC / microSD (not included).