That rust through is due entirely to condensation from the exhaust. It's Calgary, a 72, and never driven long distances. That bumper didn't have a prayer.
Other than a 5 - 7 hundred dollar rear bumper, I am very hard pressed to see anything to turn me off about the car.
Look at the engine bay. No rust. Look at the door jamb. No rust. Look at a close up of even the rear bumper. No freckles. Look at the driver's seat. No rips.
If he shows close-ups like that, he's pretty confidant it will stand up to an in-person inspection.
This car is a rare opportunity I'm willing to bet. I can feel it in my bones.
So much so, this car won't make it to the end of the auction. He'll pull it because someone local will make him an offer that he can't refuse. You never see all the good bargains make it to the end.