It's back- $30 off any Spriger eBook or Print, make sure you use Euros as your currency because then you get 30 Euros off the price instead of AUD.
Pretty good picks- Lots of $20-$30 books that would be free!
One of my personal top picks (as a mathematics student) would be:
http://www.springer.com/gp/book/9783834815767
Enjoy!
EDIT:
Here's a bunch of Hard/Soft Copy Books (as in, not eBooks) I managed to find that will be free with this deal:
Quantum Physics of Light and Matter - A Modern Introduction:
http://www.springer.com/gp/book/9783319051789
One Second Ahead - Enhance Your Performance At Work with:
http://www.springer.com/gp/book/9781137551900
Who Killed Professor X?:
http://www.springer.com/gp/book/9783034808835
Moduli Spaces of Riemannian Metrics:
http://www.springer.com/gp/book/9783034809474
S=EX^2 The Science of Sex:
http://www.springer.com/gp/book/9783319317250
Harmonic and Geometric Analysis:
http://www.springer.com/gp/book/9783034804073
Geometry and Dynamics of Integrable Systems:
http://www.springer.com/gp/book/9783319335025
Central Configurations, Periodic Orbits, and Hamiltonian Systems:
http://www.springer.com/gp/book/9783034809320
A Short History of Mathematical Population Dynamics:
http://www.springer.com/gp/book/9780857291141
Geometry and Quantization of Moduli Spaces:
http://www.springer.com/gp/book/9783319335773
Near Death Experiences:
http://www.springer.com/gp/book/9783319037271#otherversion=9…
From Science to Startup:
http://www.springer.com/gp/book/9783319304229#otherversion=9…
Codes, Ciphers, and Spies:
http://www.springer.com/gp/book/9783319294148#otherversion=9…
And there are many more.
Some from the Comments Section:
(credit saubao) A Brief History of Computing:
http://www.springer.com/gp/book/9781447123583#otherversion=9…
(credit m1nh) Agile:
http://www.springer.com/gp/book/9783319051543
Being Agile:
http://www.springer.com/gp/book/9781430258407
Agile Performance Improvement:
http://www.springer.com/gp/book/9781484208922
(credit phosphoresce) Moral and Political Philosophy:
http://www.springer.com/gp/book/9780230552753
Animal Rights- Moral Theory and Practice:
http://www.springer.com/gp/book/9780230219441
New Waves in Ethics:
http://www.springer.com/gp/book/9780230232754
(credit greenpossum) English for Research: Grammar, Usage and Style:
http://www.springer.com/gp/book/9781461415923
To save the odd click - Springer publishes mainly scientific books, in the academic and professional arena. Subjects include: