Huge Upholstery Disappointment

I mean, the correct seat foams from Legendary are $329...

68/69 CHRYSLER A & B-BODY MOLDED BUCKET SEAT FOAM | Legendary Auto Interiors

*Edit*
Sorry, those are later seat foams. But even enough generic seat foam for a seat is $86 from Legendary.
1 1/2" SUPREME FOAM 30" X 70" | Legendary Auto Interiors