(Susan M. Pigott is a fountain pen collector, pen and paperholic, photographer, and professor. You can find more from Susan on her blog Scribalishess.)
It's a horrible feeling, buyer's remorse. You purchase something and then experience crushing, inescapable guilt. Kicking yourself, you wonder why you impulsively purchased something you knew you shouldn't have. Or, you realize, after the fact, that it was something you really didn't want or need, but it was shiny. Or, you discover you paid too much or that the seller sold you a dud. It hurts. It's embarrassing. It's expensive.
I've experienced it multiple times after purchasing fountain pens, and I never seem to learn.
The first time I had buyer's remorse was when I bought a sweet little vintage black Pelikan Ibis from a seller on Fountain Pen Network. It was my first purchase via FPN, and I didn't think sellers would be dishonest. The pen was described as "in working condition" (aren't they all?). I received the pen and filled it with Aurora Black ink (to match the pen, of course). And as soon as I sat down to write in my journal, black ink flooded everywhere. The seller claimed I must have broken the pen, because it was perfectly fine when he sent it (of course it was).