Cafago offers the 5" Android GPS Navigation Car Rearview Mirror for $84.41. Coupon code "ZK2051MG" drops it to $60.47. With free shipping, that's the lowest total price we could find by $15. It features a quad-core 1.2GHz processor, up to 1920x1080 video resolution, 30 fps, micro TF card slot, and Android 4.4 (KitKat).
Note: This item ships from mainland China and may take two to six weeks to arrive. Also, the countdown timer on the product page does not reflect an actual expiration time and resets daily.