…that the RPG supplement whose used-book price you’re looking at ruefully is actually a second edition of a previous supplement, under a different name. And that the picture on the cover looks awfully familiar. And then you go look on your shelves, and lo! There it is.
Yes. THAT moment. That f*cking moment.
[UPDATE] For clarity: I didn’t spend money on this. Just an hour and a half of frustrating shopping time.