Identify the exact card name, set, card number, language, and edition
Check the card’s condition
Look for rarity symbols, holo patterns, and special print indicators
Verify if it is first edition, shadowless, unlimited, or a promo
Check for errors, misprints, or unique variants
Compare recent sold listings, not asking prices
Use multiple marketplaces and price guides
Adjust value based on condition differences
Consider grading potential and current graded prices
Check if the card is sealed, raw, or slabbed
Factor in demand for popular Pokémon, trainers, and vintage sets
Confirm authenticity before pricing
Recheck value over time since prices change frequently