UPDATED: Orange Pi WIN - SBC for $25
Pictures of new version of single-board computer called Orange Pi WIN.

The price of Orange Pi WIN is $25 (+ shipping).

You find on the board:
A64 quad-core Cortex-A53
Mali400MP2 GPU
1GB DDR3 shared with GPU
TF card (max 64GB) / NOR flash 2MB / eMMC
RJ45 1000/100Mb ethernet
CSI camera input
support of HDMI and MIPI LCD
audio výstup 3.5mm jack
WiFi & BT onboard (AP6212, IEEE 802.11 b/g/n, BT4.2)
4x USB2.0, 1x USB 2.0 OTG
40pin header compatible with RPi B+
Power supply: DC vstup, USB OTG or battery input

OS: Android, Debian, Ubuntu, Raspberry Pi Image

You can buy it on aliexpress.com https://www.aliexpress.com/store/product/Orange-Pi-Win-Development-Board-A64-Quad-core-Support-linux-and-android-Beyond-Raspberry-Pi-2/1553371_32798200305.html