[Feature Request] Lifting charge for specific currency

Background of the issue:
I offer multiple currencies in WooCommerce on my site, hidden link. One specific currency is expensive to convert for us but important to offer for the customers.
Raised earlier here: https://wpml.org/forums/topic/i-want-to-set-up-a-currency-widget-and-put-a-prices-up-for-the-specific-currency/

Symptoms:
I need to increase the lifting charge for a specific currency.

Questions:
How can I put the lifting charge up for that specific currency?