Look at the "Other Sellers on Amazon" section (bottom right on desktop) and you'll see it reduced to £15.99 for The Legend of Zelda: Ocarina of Time on Nintendo 3DS.

• Solve puzzles, travel through time and explore the immersive world
• The graphical upgrades and three-dimensional depth breathe new life into the expansive world of Hyrule
• New controls using the Nintendo 3DS & Nintendo 2DS system's technologies
• Switching items has never been simpler or quicker, with a touch-based inventory system
• International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.