general, organic, and biochemistry 4th edition sells for $132 new, 2$at bookbyte, and one dollar at the local used bookstore! Organic and Biochemistry for today [ame="http://www.amazon.com/gp/product/0495119628"]sells for $151 at amazon[/ame] I got the second edition (brown cover) for one dollar at the local used bookstore. Introductory electronic devices and circuits, 4th edition (Robert. T. Paynter) for a dollar! I only found the lab book online. human development across the lifespan is $45 new and 3-5 bucks online (plus shipping) used. I got it for a dollar. digital systems principles and applications 7th edition (Tocci & Widmer), $28 new... guess how much it cost... electricity principles and applications 2nd edition is 36 bucks new...* electronics principles and applications 2nd edition was free (buy 5, get 1 free) *They're up to the 6th edition now, but this should still be sufficient as an introductory course ' Fuck yea!