I am certain that this is something that has been well covered on this forum a long time ago, so I apologize for the question. What I need is a little help understanding the difference in production costs between Gallium and Silicon. From what I have read thus far, Gallium is tremendously more expensive than Silicon to produce which would clearly be an issue, so I am hoping someone here may be able to point me towards a better understanding of how PTK has indicated (if they have) that they will be able to overcome this. A link, a comment....anything would be appreciated if possible.