You can still see the repair cost even when it's done under warranty...
Once that 8 years is over though, you pay it.
Is anyone going to pay 30k+ to repair a car worth probably 25k by then, probably not. Not even Porsche themselves. Off to auction for "spares or repairs" or junkyard. It's not like they are rare cars.
Warranty repair costs are always £LOL on paper though. Go and get a gearbox replaced under warranty on an ICE car and you'll see similarly idiotic bills.