TomTop offers this MX4 4K Smart Android 6.0 TV Box for $20.99 plus $5.15 for shipping. That's the lowest price we could find by $9. It features a Rockchip RK3229 Cortex A7 1.5GHz quad-core processor, 1GB RAM, 8GB internal flash storage, support for a resolution up to 3840x2160 (4K), 802.11n wireless, 10/100 RJ-45 Ethernet, USB, and Android 6.0 OS (Marshmallow).