Some pics of my main rust issue (there are a few other spots I noticed, but think I could repair):
https://photos.app.goo.gl/jOwXljYjHkhvPRT02
Poked it a little bit with my finger, and went through to the other side, then poked that a little and went further. So the sheet metal layer under that also need repaired.
I'm also concerned that in a crash, this will be come a folding point for the body. I have a TIG welder and could tackle repairing it, but I'd have to cut out enough the first layer to repair the inner layer (probably removing much of the interior of the car), then weld in the outer layer. Lots of folds and complications in there will make it tricky to fab.
I don't mind if you want to call me lazy. Perhaps it's repairable, everything can be repaired for a price, but given the value of the car (and that I have a much lower mileage one), doesn't seem worth it.
Also, given the rust, I'm not going to feel good selling it to somebody to drive...
Cheers,
Ian.