For Sale: Linear Algebra
By: Steven Levandosky
Publisher: Pearson Custom Publishing
ISBN: 9780536667472
Used. Some highlights and writing inside.
Used at Stanford Bookstore: $64

Vector Calculus
By: Susan Jane Colley
Publisher: Upper Saddle River, NJ : Pearson Prentice Hall, c2006.
ISBN: 9780131858749
Used. Slighly worn cover. No writing inside.
Used at Stanford Bookstore: $104.25

Both for $100.