Demand and Supply
I've clicked on the duster several times and the page says that it's not available.
Someone with cash money who wanted the car ran and grabbed it.
They did not care if needed new tires, seat ripped, wrong valvle covers, strearing wheel was after market. They wanted and had the cash in hand to buy it. Then swap tires, tune up, seats, brakes, hoses, fluid changes, belts etc smallest things to.them to have a safe cool old dependable car.
If you can't afford the small stuff fixed when bought. PLUS spares to keep in trunk you should not have an old car.
Amd the last part goes for everyone.
When i was daily basis using my 1971 Challenger i needed a part a few times and had it with me. I also help many on the road with what i had who were not prepared.