That can’t be done. If you enable the “Show Order Total On Payment Popup” checkbox in the product edit configuration, then it will show a nice breakdown of the price (based on the selection). It makes it very clear as to what the pricing is and how much is going to be charged based on the variation selection. I would recommend you try that and see if you get any complaints from customers. We designed this after a lot of thinking and observing what the industry standard is. Also, we take into account what will cover most of the user’s use case scenario. So it is worth for you to give that option a try. If it doesn’t work then maybe you have to get a different solution.