This post is intended to be a thread on the various print editions of the Greek NT and OT, and combined volumes.
I note that nobody answered Louis' question about a one volume Greek OT and NT. I don't think such an edition exists. There are Modern Greek versions that combine the OT and NT. One would think that in Greece at some point someone would have produced a combined Koine edition, but maybe the ecclesiastical tradition there is to have two books. Zondervan produced a combined Hebrew OT and Greek NT in response to consumer interest, and I know that there is a demand for a Reader's LXX, so I would not be surprised if in the near future Zondervan produced a one volume Greek OT and NT.
There has just been published a new deluxe leather edition of the UBS Reader's Greek NT. It is αξιολογος for its price ($107) and the high quality of its cover and binding.
http://www.amazon.com/UBS-Greek-New-Tes ... 450&sr=1-3
This would appear to be the most fancy print edition of the Greek NT currently available, but the Amazon reviews suggest that there is a problem with the paper used.