The bar in the picture says it’s a kilo which is $65, 344. While I could agree with OP that 10 kilos would give you an average house in higher priced areas like new York or LA, it would definitely buy you several nice houses in 1920.
Any fish that dies from plastic is dying from a method that isn’t me eating it. Also, there’s lots of fish I don’t eat that I’m not cool with dying to plastic. I really like the ocean plants that make all the oxygen I breath too.