Build it yourself!
The AYAB Shield is Open Source.
Here you can find all necessary information you need (Layout, Schematics, BOM, …).
For PCB manufacturing you might use OSH Park or seeed studio
For people which are not into PCB manufacturing and soldering,
you can order the new AYAB-Interface at the Evil Mad Scientists Laboratories shop.
We also provide a way to get self solder shield kits directly from us at the thinkstack shop.