[Ikeon]

They changed to polystyrene instead of vinyl. It was cheaper and the records could be injection molded instead of pressed. The dies lasted much longer. Like 10k copies for vinyl vs. 200k for polystyrene.

If you cant tell the difference by feel or one look, then stick to paying for cd's. Because you'll get ripped off buying " vinyl" thats the cheaper poly sooner or later, and polystyrene doesn't sound as good as vinyl or last as long.

[Yardstick]

They changed to polystyrene instead of vinyl.
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Some 45s were polystyrene but you’d probably have a hard time finding a polystyrene LP.

[LeoTDB69]

Being the audiophile I am I really want to hear this underrated masterpiece on true equipment with top quality sound.

https://www.youtube.com/watch?v=r9lpLm7jwQY