Hello -
Don't know about the cost, but this sounds like a logical progression of similar stuff :
Epson prints 1mm thick circuit boards on an inkjet - Engadget
Circuit Board Etching
Make Your Own Printed Circuit Boards on a Laserjet!
Flexible E-Paper on Its Way
How to Make Printed Circuit Boards
I know of at least one company that wanted to use printer technology to make things like disposeable "LCD Newspapers" :
The Electronic Paper Chase
CarloSW2