4x Die-cast Toy Cars

Set of four die-cast toy cars, including a red Porsche, a red Corvette, a red Viper, and a silver Porsche. All cars have opening doors and hoods. these models are very collectable, they are very heavy and solid, scale 1/18, they are all from the 90s, over 30 years old, they have been kept in pristine condition all these years $30 each or all 4 for $100