What is the best free card appraisal site?

One of the best free card appraisal sites is TCGPlayer, which provides a comprehensive marketplace for trading card games like Magic: The Gathering, Pokémon, and Yu-Gi-Oh. It offers real-time pricing data based on recent sales, allowing users to gauge the market value of their cards. Another popular option is Beckett, known for its grading and pricing guides, although some features may require a subscription. For Pokémon cards specifically, sites like Pokémon Price can also be useful for tracking values.