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.
A bit of a narrow audience, but I bought The id Anthology - basically a greatest hits collection of id Software’s games up to Quake.
I bought it for a laugh really a few months after it came out for about £25, and kept the cool trinkets inside it.
These days, it’s worth anything from fifteen times that to fifty times that, judging by eBay’s completed listings.
It’s cool, and I’ve no plans to flog it, but it’s nice to know that there’s a small holiday’s worth of funds tied up in it.
That looks awesome! Collector’s boxes of games can be really cool. I still have the collector’s edition of Skyrim (the original release), and it’s worth a good bit. I don’t really want to get rid of the cool Alduin statue though.