Toretoku is a specialist trading card purchasing service in Japan, offering a convenient way to sell unwanted cards through mail-in buying. Customers pack their cards and send them in without sorting by rarity or checking which items are eligible. The service is free to use, provides complimentary shipping boxes for those who need them, and arranges shipping through the application process. Toretoku says its expert appraisers assess eligible items individually, including low-rarity and older cards, and actively purchases single cards as well as large collections.

The service accepts cards from a range of popular games, including Yu-Gi-Oh! and Rush Duel, Pokémon, Magic: The Gathering, Duel Masters, One Piece Card Game, and Weiß Schwarz. It also buys related supplies and items such as sleeves, unopened products, and other card accessories. Toretoku publishes high-value buying lists and examples of completed purchases, while noting that prices can change and depend on card condition. The company reports more than 4.2 million cumulative users across its group as of November 2025.