What item do you own that has an unexpectedly high value?
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 had a friend over who complimented my teapot, I love it because it's a nice color, good size and has a stainless steel infuser that fits inside. So I offered to get her one of her own only to find out that this particular color is highly collectible and worth 6-7x what I paid for it originally. Now I have a nice teapot I'm paranoid about anything happening to, haha.
If you never intend to sell it then value doesn't really matter. It can be a fun story when someone is over for tea, but you aren't losing anything if something happens.
What color is the teapot? Do you know if that color had a limited number or if it is just popular? It's always a little funny to me when something is rare just because of a different color or something similar that doesn't impact function compared to the normal item, but I get it all comes down to preference and rarity.
It's by Le Creuset, and they apparently rotate out most of their colors. So you can still buy the same teapot in a different color, which is what I ended up doing for my friend. The one I got was a limited run, it's a pretty rich purple they called "cassis", if you search Ebay for anything in that color the prices are nuts!