“How much for this?” It was a cheap romance novel. In French, which I don’t speak, but it was from Earth.
“Not for sale.”
“What? Why not?”
The alien shopkeeper looked at me for a moment, and then said pityingly, “Look, I know you’re human. I sympathize. I can’t imagine what it must be like to know your planet is gone… but if my wealthy collector found I had sold an Earth artifact to someone else, he might take his business elsewhere!” He moved off.
At least he didn’t throw me out. I stood there holding it for a while.