Asus Tinker Board is a DIY mini PC that takes aim at Raspberry Pi

https://www.cnet.com/products/asus-tinker-board/preview/

Like the Raspberry Pi 3, the Tinker Board is basically an entire PC -- motherboard, CPU, GPU, system memory and more -- all in one package. Based around a Rockchip RK3388 SoC quad-core 1.8GHz ARM Cortex-A17 CPU, Asus is claiming the board will have twice the performance of the Pi 3, which is now nearly a year old.

Other specs include:

    2GB dual-channel LPDDR3 memory
    Gigabit LAN and Bluetooth 4.0 + EDR connectivity
    802.11 b/g/n Wi-Fi
    Four USB 2.0 ports
    40-pin internal header with 28 GPIO pins
    Contact points for PWM and S/PDIF signals
    3.5mm audio jack connection
    CSI port for camera connection
    DSI port supporting HD resolution
    HDMI 2.0 port with 4K-resolution support
    MicroSD port supporting UHS-I card speed
    Supports Debian OS with Kodi
    5V/2A Micro-USB power supply (not included)

It is just the board and what's on it, however, so you'll have to supply your own microSD card for storage, a Micro-USB power supply, keyboard, mouse and display.

French site MiniMachines first learned of the board at CES 2017, but it is now available in the UK for £55, which converts to approximately $70 or AU$90. That's about twice the cost of a Raspberry Pi 3, which for some will defeat the entire low-cost purpose of the platform.