This could be something that you bought for a higher price than what most people would guess based on the item, or it could be something you bought for a normal price that has gained significant value as time has gone on.
What made me think of this question is a LEGO minifigure I got with my “The Hobbit: An Unexpected Journey” disc. It is Bilbo Baggins in a blue coat that was apparently only sold in that movie box only at Target stores. Even considering the exclusivity, I would have guessed maybe $10-20 for such a tiny piece of plastic, but there are sold listings on eBay from $80 to $225. I could possibly even get towards the higher end of that number since I still have everything in the original box in good condition. It’s not worth a ton compared to some other items people may own, but I think most people would not expect nearly that amount.
I wish I had kept my cards. I had binders and lunch tins full of Pokemon cards when I was younger. A lot got sold at garage sales while I was growing up, but I may still have a few left somewhere.
If you ever do sell them, I’d recommend only selling to a shop as a last resort or if you need quick money. I usually start by trying to sell on Facebook Marketplace since you don’t have to pay fees or shipping and get the most profit. On the flip side, you usually need to wait longer due to the smaller number of local buyers, and you have to deal with annoyances like people haggling for obscenely low prices, asking you to drive far to meet them, or just not showing up to buy the item. After a while, I usually list the item on eBay which means less profit due to fees and shipping, but usually more buyers and a smoother experience.
Thanks! That’s too bad, it’s actually a fun game to play. I was one of the only ones in my neighborhood that played the game when I was a kid. So lots of dups and such.