I was just looking at used car listings and saw an old 94 Saturn SC1 for sale. It had 185K miles on it but no rust

I'm guessing that the 1.9L engine was shot because the seller only wanted $1000 for it.
Did the plastic panels cost a lot more than steel? The price of sheet steel has shot up recently so I wonder if some of the automakers at looking at plastic again. Seems to me the car should be lighter with plastic also not overlooking the steel cage underneath them for structural strength.