For a configurable product that has tier prices can the unit price on the product page update to the correct tier price based on the quantity that the user enters.
Buy 100 for £1.55
Buy 200 for £1.04each and save 33%
Buy 300 for £0.78each and save 50%
Buy 400 for £0.70each and save 56%
Buy 500 for £0.62each and save 60%
If the user enters 100, the unit price displays as £1.55 correctly. However if the user enters 200, the unit price remains £1.55 whereas it should display £1.04. It does not display the correct tier price until you add the item to the cart.