StembookDeals
Price comparison across 5 retailers, by ISBN

Find the cheapest copy of any STEM textbook

Search canonical engineering, math, physics, biology, and computer science titles — by name or ISBN — and see live prices across Amazon, eBay, AbeBooks, Alibris, and Pearson InformIT in one place.

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Three ways in: your university, your subject, or the specific course code on your syllabus.

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How StembookDeals works

We do the price-hunting for you. No more opening six browser tabs to compare every retailer.

Find your textbook

Search by ISBN, title, or paste a course code. Every canonical STEM title, indexed.

Compare every retailer

Side-by-side links to Amazon, AbeBooks, eBay, Alibris, and Pearson InformIT — new, used, and international copies covered.

Buy at the best price

Click through to the retailer of your choice. Affiliate-transparent — the cheapest copy always wins the ranking, regardless of commission.

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Want an alert on a specific book? Find it in the catalog — every textbook page lets you set your own target price.

How we stay free for students

StembookDeals earns a small commission when you buy through our links. It comes out of the retailer's margin, never your pocket — the price you pay is identical whether you come through us or not. Higher commission rates do not move a retailer up our rankings. The cheapest price wins the click, every time. Read our full affiliate disclosure →