Because the buyer didn't do their research.
A seller managed to sell their miscut and misprinted 2017 Pokemon Trading Card Game Sun & Moon Burning Shadows Secret Rare 150 Charizard GX card for $169.
The edges of that copy is rough due to a cutting error, and it contains a circle etching for a nonexistent Colorless Energy symbol, as seen in the image below (that's not from that $169 listing):
What's ironic is that misprinted error is common... meaning the buyer paid $17.50 above the current market value of $151.50. That estimate is based on the last ten sales.