$90 - statistics for engineering and the sciences, brand new and unused, 5th edition hardcover
$30 - vector calculus by colley, used and scuffed cover but no highlighting or marks inside, 2nd edition hardcover
$50 - data analysis and graphics using r (maindonald and braun), brand new and unused hardcover
$60 - intermediate microeconomics by varian, brand new and still in shrink wrap, 7th edition softcover (international edition)
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