Apologies for going off topic again. Just answering the question.
I was told by the Liverpool fan at work all the ticket prices on the KOP are the same regardless who Liverpool play in the PL. He was slightly out with the KOP ticket prices, hence why I checked to make sure. He said £42 for all adults this season.
From what I posted from the LFC OS it doesn’t show category game pricing.
Main ticket page.
View attachment 116937
Click on Premier League match tickets.
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The official Liverpool FC website
www.liverpoolfc.com