Thanks for all the replies. Car is 4 years old, but yeah, still shouldn't happen imho.
The rest of it is pretty spotless. Unfortunately it is not a lexus used approved, but does have a full lexus service history and is being sold by a reputable garage.
There is actually more wear to the right hand side of the driver seat, just didn't get a pic of it. The pics posted are the worst of it.
Ex taxi. Hmm...never thought of that! I just figured it was owned by a heavy couple!
I think I still like the car, so it's really a question of repair. Anyone have any thoughts on that?