I have just bought this book 2nd hand from a local and I got it cheaper that I could have got it on ebay.
Plus I got it when I paid for it unlike ebay also.
So there is a lot to say about these facebook selling pages to your own location.
I got
Photographic Field Guide: Birds Of Australia By Jim Flegg 2nd edition.
This book is what I had before but lost it somewhere so I bout another which isn't too good.

And I wanted this one again. Pleased to say I have used it 2 time today and that makes me happy.
Not too sure on how many editions there are but I would say its a good book.