Introduction to Information Retrieval -- $30
http://www.amazon.com/Introduction-Information-Retrieval-Christopher-Manning/dp/0521865719

Practical Business Statistics (5th) -- $10
http://www.amazon.com/Practical-Business-Statistics-Andrew-Siegel/dp/0123852080/ref=sr_1_1?s=books&ie=UTF8&qid=1393968671&sr=1-1&keywords=Practical+Business+Statistics

The high frequency game changer -- $20
http://www.amazon.com/High-Frequency-Game-Changer-Revolutionized/dp/0470770384/ref=sr_1_1?s=books&ie=UTF8&qid=1393968770&sr=1-1&keywords=The+high+frequency+game+changer

Option future and other derivatives -- $40
http://www.amazon.com/Options-Futures-Derivatives-DerivaGem-Package/dp/0132777428/ref=sr_1_1?s=books&ie=UTF8&qid=1393968836&sr=1-1&keywords=Option+future+and+other+derivatives

Imaging Atlas of Human Anatomy --$20
http://www.amazon.com/Imaging-Atlas-Human-Anatomy-3e/dp/0723432112/ref=sr_1_2?s=books&ie=UTF8&qid=1393968885&sr=1-2&keywords=Imaging+Atlas+of+Human+Anatomy

Discrete signal processing -- $10
http://www.amazon.com/Discrete-Time-Signal-Processing-2nd-Prentice-Hall/dp/0137549202/ref=sr_1_2?s=books&ie=UTF8&qid=1393968949&sr=1-2&keywords=discrete+signal+processing

Where good ideas come from by steve johnson -- $3
http://www.amazon.com/Where-Good-Ideas-Steven-Johnson/dp/1594485380/ref=sr_1_1?s=books&ie=UTF8&qid=1393969005&sr=1-1&keywords=where+good+ideas+come+from+by+steve+johnson

Fortune's formula -- $8
http://www.amazon.com/Fortunes-Formula-Scientific-Betting-Casinos/dp/0809045990/ref=sr_1_1?s=books&ie=UTF8&qid=1393969044&sr=1-1&keywords=fortune%27s+formula

The wisdom of crowds -- $5
http://www.amazon.com/Wisdom-Crowds-James-Surowiecki/dp/0385721706/ref=sr_1_1?s=books&ie=UTF8&qid=1393969087&sr=1-1&keywords=the+wisdom+of+crowds

The new market wizards -- $10
http://www.amazon.com/New-Market-Wizards-Conversations-Americas/dp/0887306675/ref=sr_1_1?s=books&ie=UTF8&qid=1393969124&sr=1-1&keywords=the+new+market+wizards