I am taking PM offers. Just hit me up... I am in no rush to sell since mine works...
Many of them are all broken now... LinageOS is also something that will make this device work fully like a K1 tablet when the dev makes the new ROM supporting this specific K1 device.
Hence I do think the price I accept will NOT be low. I have done some work fixing this too, not fun screwing with ADB and trying to force ROOT this devkit. LinageOS will be the best option in time though.