Cafago offers this MXQ-4K Smart Android TV Box for $31.14. Coupon code "ZLV18MG" drops it to $25.08. With free shipping, that's the lowest total price we could find by $4. It features a Rockchip RK3229 Cortex A7 1.2GHz 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, HDMI, USB, and Android 6.0 OS (Marshmallow).
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.