Method
Exact editions, honest comparisons.
A compact route from ISBN to retailer offer — without inventing shipping or checkout totals.
1 — Exact editions
We primarily identify collected editions by ISBN/EAN, then retain format and variant details.
2 — Retailer offers
Multiple EU retailer listings are matched to the same canonical edition when the evidence supports it.
3 — Destination
Shipping rules are applied only where reliably known for the selected destination.
4 — Honest comparison
When final VAT or shipping is determined at checkout, the item price remains visible but the delivered total remains unknown.
5 — Updates
Prices and availability are periodically collected from retailer sources. Final retailer pages and checkout remain authoritative.