Someone said :
True. And in five years I maybe able to get a thousand for it!
Maybe you could do something to make you feel like you are getting more use out of the t-shirt. Have you thought about having it framed, and displaying it somewhere in your home? (Somewhere it will be safe of course, so it can continue to accumulate value
I bought a lamp in a charity shop a while ago, 50 quid. Turns out the lamp sells regularly for 500+ pound online. I'll never sell it unless I really need the money. I defo have hoarding issues though.