Ahh, I'm with you. Yeah, it's a bit tricky to see with the quality of the pics. Hopefully you're right about the protector. It certainly looks as if the protector could be to blame, but it's something to note.
I text the guy today asking for more recent pictures with close ups of the interior, engine bay and the car in general. He said that once his girlfriend is back he'll get her to upload the pictures to his computer as he struggles to work his way around one.
Seems like a genuine guy (for what that's worth) and he's confident that I won't be disappointed if I make the trip. Sometimes I think you've just got to take these chances.