$50 Principles of Neural Science by Kandel, Schwartz
$10 Analysis and Design of Analog Integrated Circuits (5th edition, International Version) by Gray, Hurst
$10 Analysis and Design of Elementary MOS Amplifier Stages by Murmann
$15 Digital Design by Dally
$10 Electrical Engineering (5th edition) by Hambley
$20 Digital Systems Engineering by Dally
$10 Fluid Mechanics (8th edition, International Version) by Fox
$75 Principles of Power Electronics by Kassakian, Schlecht
$20 Modern Digital and Analog Communication Systems (4th edition, International Version) by Lathi, Ding
I accept cash or Venmo.
See link for photos of all the textbooks.