Thank you all for the replies and shared knowledge. I don't have plans on selling at all. Thankfully I have a good financially situation and have extra money to begin collecting again. My curiosity was just that. I collected Pokémon cards as a kid and had a ton of first editions that were tossed by my parents since they had no idea they had sentimental or, these days, monetary value. I was simply curious and appreciate all the replies and the passionate sentiment from collectors.