Second hand shopping for merch

For some odd reason it never occured to me that you can buy merch secondhand. Idk why. I thrift for most of my new clothes, and never found a single piece of merch aside from spiderman lunchboxes and the like. However recently while looking for secondhand stores I found one that sells videogames and posters and oh lawd was it an experience. Have you ever seen massive promotional posters go for cheap? Well I have after this. I bough one for myself, as well as my sibling. Overall highly recommend to check the secondhand stores near you in case they deal in fandom stuff.