Thats the million dollar question, they've been pretty tight lipped on price. But as a matter of comparison, the [Canute] multirow display, which was also doing pre-production testing back in march, has claimed it will retail for around 720 to 1080$, or about the price of a new iPhone. It has a total of 360 pins, broken up into 6 dot cells, with 40 cells per row over 9 rows, so its something like 27 by 80 compared to the graphiti's 40 by 60.
By comparison the Graphiti's interface and variable height pins are much more sophisticated, and geared towards image processing rather than as a reader. Its difficult to guess what they may end up charging, but i'd bet its somewhere north of the Canute.
-
BrushTone v1.3.3: Accessible Paint Tool
-
AudiMesh3D v1.0.0: Accessible 3D Model Viewer