Unios

Used textbooks. Inside the union.

Members list books they're done with. Other members buy them. No third-party fees, no scrolling through 2,000-member Facebook groups. We seed the categories with your course catalogue so it's useful from day one.

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What's in the box

ISBN-based listings
Sellers paste an ISBN; title, author, and cover are filled automatically. No typo-laden listings.
Course tagging
Books are tagged to courses so members find what they need by course code, not by trawling listings.
Direct seller contact
Buyer reaches the seller via the contact method they listed (email / Messenger / Discord) — no separate inbox to lose, no platform middleman.
Condition + price
Standard fields keep listings consistent. No mystery "DM for price" entries.
Auto-archive
Listings expire at the end of the semester so the shop stays current. We tune the timing for your academic calendar.

Ready to stop maintaining your website?

We're onboarding a small cohort of Danish student unions for Autumn 2026. Setup, migration, and training included — let's talk.

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