[disclaimer: I do work for Logos Bible Software, but the below post is from me, not from Logos.]

If you're in Biblical Studies at all, working with the text of the Hebrew Bible or the Greek New Testament, you've heard of the Hermeneia Commentary series.

All 40 published volumes will be published as a CD-ROM product in the Libronix Digital Library System (LDLS), fully compatible and complementary to Logos Bible Software.

You can pre-order Hermeneia now via the Logos Pre-Publication system. The price is currently $500 (do the math: $12.50 per volume!), the pre-pub system only charges you upon release and shipment of the software.

You don't have to like the conclusions of the Hermeneia commentaries, but if you're doing anything serious, you have to deal with them. The series is unique in that it includes volumes of extra-biblical material too (e.g., 1 Enoch, Didache, Ignatian Epistles, 4 Ezra, etc.).

More info is on the pre-pub page. Do check it out.