Free textbook decision tool

Should you buy or rent this textbook?

Compare the complete semester cost—not only the price shown in the search result. Account for shipping, access materials, resale uncertainty, deadlines, and rental risk.

No account required Commission-independent result

Verify the book first. This calculator assumes the purchase and rental are the same required ISBN, edition, format, and component bundle.

How to verify an ISBN

Your comparison

Enter the costs you can verify.

Leave a field at zero when it does not apply. Use conservative estimates for resale value and potential rental costs.

01Cost to buy

Include the complete delivered cost and use a conservative resale estimate.

Purchase priceShippingTaxes and feesRequired extrasAccess code, workbook, or required supplementExpected resale priceChance of successful resale 50%Use a lower percentage when a new edition may appear or demand is uncertain.

02Cost to rent

Count return costs and realistic risks—not only the advertised rental charge.

Rental priceOutbound shippingReturn shippingTaxes and service feesRequired extrasSeparate access code or required supplementLikely extension costRisk allowanceA small allowance for late-return or damage exposure

03 Add the course contextI expect to use this book after the course.Ownership may justify a modest cost premium.The rental return deadline is manageable.Clear this when the due date, carrier, or return process creates meaningful risk.

The recommendation is calculated independently of affiliate commissions.

How the calculation works

A transparent recommendation—not a merchant ranking.

The calculator subtracts only a risk-adjusted portion of expected resale value. It adds rental costs and allowances that can disappear from an advertised headline price.

Effective buying costDelivered purchase cost + required extras − risk-adjusted resale value

Effective rental costRental charge + shipping + required extras + likely fees and risk allowance

Use the result as a decision aid.

Prices, resale demand, rental policies, course requirements, and access-code availability can change. Confirm the exact offer and merchant terms before purchasing.