For me, that's worth $15 per board.
Unfortunately, the Raspberry Pi 3 sells for over 50€ per board.
The Raspberry Pi zero, in spite of being marketed as a 10€ computer, in practice can't be purchased at all.
Look at http://www.whereismypizero.com/
Want to make a micro-computer? Get the RPi 3.
Want to make a robot or drone? Get the RPi Zero.
Always. Everywhere. Wanted 25 units to teach a robot class to some local kids at the Hackerspace. Had to buy 3's instead. Even if I'd placed 25 separate orders, the cost of individual shipping on each vs the cost savings of the combined shipping on the 3's put the price within spitting distance.
Pi zero is an ad. A loss leader. A way to have an answer, any answer, to the flood of $7 Allwinner wonder-boards on AliExpress.
Actually it looks like there are quite a few Allwinner devices listed (look for sun__...)
Next Thing says the C.H.I.P. (or at least the C.H.I.P. Pro) runs mainline Linux, but that's not really comparable to the current Raspberry Pi.