Hello,
you can find the answer to your question on this page: https://www.chess.com/legal/subscriber
In particular:
If I understand correctly, if the subscription is shown in LBP, you will be charged in LBP.
Local Currency Subscription
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Hi! I was wondering if I subscribed for a yearly diamond membership, would I be charged in USD? The page shows my local currency (Lebanese) (LBP). My question is, after the free trial runs out, I’ll automatically be billed in $ not LBP, right? This is what I want. Thank you.