There is a complete set of the Webb Society Deep Sky Observers Handbooks currently up for auction on Astromart. The Auction has 2 days to run. Link below
http://www.astromart.com/auctions/li...category_id=15
This collection was published in the late 1970's early 1980's. These books have been out of publication for many years and are exceedingly difficult to find in Australia, moreso as a compete set. They are available as individual volumes in USA, but again rarely as a complete set. I have the full set. It is an excellent reference for an intermediate level astronomer.
I highly recommend someone snap these up. It is likely they will go for less than $10 each, more likely less than $5 each.
Cheers,
John B