If a pen is stained, does that mean it’s completely ruined?
Not at all! Although visually, it may be damaged, the pen is not entirely ruined. It’s possible it can be restored and the stain(s) can be removed, and it also depends on the condition of the rest of the pen – the filling system, the trim, the material of the pen, and especially the nib. If it still works, and the stain cannot be removed, it’s possible it will just be a user grade pen. There’s nothing wrong with that, so long as you don’t mind.