Yes, absolutely. On Domino Pi an Domino Qi Mini, there is a Domino Core pre-mounted already.
Yes, just pay $12 for each extra Domino Core you want and we will know. No extra shipping fee is needed.
Yes. Please pledge the "Domino Qi", not "Domino Pi".
Domino Core has 3 x Ethernet ports, with 2 Ethernet break out pins to the edge. The other one has pads on the bottom. If used in SMT soldering, you can use all three Ethernet.
It is on the bottom side. Please check the picture here: http://domino.io/product/domino-3x-usb-microsd-combo-tile/
It is open source. Please check our github page for the source.
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