Lightroom subscription

Hello. 29 days ago I purchased a subscription for a month Lightroom ($ 10). For technical reasons, I want to cancel the subscription, but the settings say that I have to pay $ 54 to unsubscribe according to the annual plan. but this is 5 times more. Is this the way it should be? I have been using the program for less than a month. How can I cancel the meal leaving money? Thank you.