How to show discounted price before customers press "Checkout"?

Site URL: https://www.inspirebellydance.com.au

I have a series of discounts that are applied automatically when customers spend over certain amounts.
On the Shopping Cart page, customers see the non-discounted price - a subtotal which is waaaay more than the actual price they'll be paying. It makes them think this is how much they'll be charged, when they press "checkout", and it's turning them off. 

How do I show the discounted total on the Shopping Cart page?

Failing that, how do I add text to the Shopping Cart page, to explain that this is not the amount they'll be charged, and to click through to see their discounted total?

(I'm sure many other sellers have this problem, and I'm surprised I can't find any other references to this problem. I must be missing something really obvious... )

Discounts are handled on the checkout page.

To add a message to the cart add the following to Design > Custom CSS.

#cart .checkout::before {

  content : '[enter text here between single quotes]';
  display : block;
  font-weight : bold;
  margin-top : 30px;

  }

Let us know how it goes.
 

Thankyou @creedon! It's not a perfect solution, but it's probably the best we can do. Really appreciate your help as I'm still learning how to do Custom CSS. Thankyou for your generosity.