Bought, turned on, running.

Although Android, that's pre-installed, is designed for touch devices and the use of keyboard and mouse is a bit unusual, the Cubietruck Cubieboard 3 is a great device!
One can play another Linux system, a more appeals. Reference is, however, said that one should be to deal with it a little more intense, when you're a newcomer to the area, before tinkering thereabouts and then afterwards annoyed.
I did it because it was not delivered Coinciding with the 2.5A USB power adapter, powered by my phone charger (1A). Also it worked. But if you want to connect for example an external hard drive, then should necessarily have its own power supply in the circumstance, otherwise a run out of Cubieboard, simply because the PSU is too weak. So: Be sure a USB power supply with at least 2.5A buy if you have not already one..
Delivery time: much faster than expected.
After ordering was about one week delivery time, after 2 days business days it was there.
The technical intricacies of Cubietrucks are already in another extremely useful review, I now must not repeat in detail. Only short cut: more power than the Raspberry, a bit bigger too, but nevertheless extremely cheap compared to another computer.

Summary:
It is worth it!
What more do you want?