I have the following books for sale (first price is the Amazon price with NO tax):

Microeconomic Theory, Mas Colell, Whinston and Green - hardcover - 140 - selling for $100 (around 5 pages have some very minor and neat underlining)
The Theory of Industrial Organization - Tirole - hardcover - 77 - selling for $55 - Brand NEW
Convex Optimization - Boyd and Vandenberghe - Hardcover - 67 - selling for $45 - I think it has some minor underlining
Microeconomic Analysis, 3rd edition - Varian - hardcover - 105 - selling for $80 - Brand NEW