[GScivic7]

I don't understand what you guys are arguing about. The only way I can really see a seat causing some kind of injury is if you didn't tighten it down enough. That's the owner's fault, not the seat's or Ebay's.

Seatbelts/harnesses on the other hand is another story. Good chance that cheapo ones will frey and tear in an accident with all the friction between it and your body.