Is it a "S" or base model? 70k miles to me is a lot as You have no idea what those miles were. I would want to know the service intervals. I would also be wondering why seats were replaces as they aren't cheap. (flood damage, just old ....?).
what is the price. I always check ebay completed auctions to see what similar models went for. I don't know about the seal, but I would think its good that it was replaced.