TomTop offers this 4.1" Universal Car Radio MP5 Player in Black/Champagne Gold for $36.99 plus $5.15 for shipping. That's the lowest total price we could find by $8. It features a 4.1" 800x480 LED LCD, Bluetooth, FM radio, rear-view camera input, USB, 3.5mm auxiliary input, TF card slot, and steering wheel remote control.

Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.