As many of you know, the set of Revelation commentaries has been 'stuck' for a long time, with a lower and higher peak. The higher peak is set at a price which is not much less than fully published commentaries sets are going for (and actually about the same if one has the academic discount), and therefore it is not too surprising that no one has jumped on the higher peak for a while. However, the higher peak appears to be discouraging bids at the lower peak, as people see the higher price and move on.
The book of Revelation is a unique book in the NT, and I personally would love to see this set come into production, as I'm sure many others would. For those of you who have not bid, but yet would like to see this set, the only way forward is for enough bidders to go in at the lower bidding peak until it dislodges the higher peak.
In my opinion, this set is worth it just for Elliot alone, which was THE definitive historicist commentary back when historicism was still a popular hermeneutical option among Protestants.
Hort's work is still very important, especially on the question of the dating of Revelation (Hort defends the early date).
The Antichrist Legend by Bousset is the third reason I personally would love to see this set in publication. Bousset traces the antichrist motif all the way back to ancient Mesopotamia.
Also worthy of note is William Kelly's work. Kelly was a contemporary of Darby, whom he follows in the main contours of this classic dispensational work written from a Plymouth Brethren perspective. Seiss was also a contemporary of Darby and was influenced by the Plymouth Brethren. He wrote his dispensational commentary as a Lutheran.
http://www.logos.com/product/8522/classic-commentaries-and-studies-on-revelation