Creating a form with different pricing based on selected answer

Good Day, 

I would like to set up a condition where the payment option of $85 appears only for "Choice A" and $110 appears only for "Choice B". I want my customers to have total clarity of their payment option. Also, I do not want them to accidentally or purposely make a wrong payment. 

I know this can be done through an "order" option. However, I can't locate it. 

Thank you for contacting us.

Do you plan to use one of the payment integrations to accept the payments online, or do you need to only show the price?

Please let us know so we will be able to suggest a proper solution.