This has been overcome by engraving characters on the opposite side of the surface of the private key to ensure the private key is 100% not readable.
The only way to obtain the private key is by actually making minimal physical damage to the coin itself so any tampering is evident making the coin possibly the most secure on the market.
I'm not quite clear how this works.
The 270 is the amount to be paid upfront in the pre sale and the bitcoin can be paid after manufacture.
A lot of people got burned with the Coinographic preorder, perhaps it is better to make the coin first and then sell them.