I have to share why I did this project.
First, The protective dad in me was surprised by the fact so many people wanted lighting and wanted to try my hand at it and fix it.
Second, protecting something so precious to our affections ie. a tool for reading. I tried to figure out a way to carry it a well.
Third, the worst, totally egotistical, I wanted one for myself...when Sony decides to...

This is why I'm not bothered by the initial investment. I can just imagine what it cost SONY for theirs in the R&D of the reader.
There is a box in the works that will be more affordable.