one old version textbook: $50~~
one new version textbook: $70~~
summary written by myself plus all printed lecture notes plus all printed assignments questions and answers plus last term midterm papers!(with right answers) this material package sells for $50~~~ you will find it's worth that~ buy with the old version textbook has a combo price 90, with the new version one is $110~~
both in good condition~~~ and the old version one is also good to use cuz the content didn't change much~~~~