I have tried multiple ways to customise the product/checkout to display a clear breakdown of the cost and calculate the below in the cart/order summary.
Thanks for your help, however it is not calculating the amount into the sub total. I also don’t have access to the checkout.liquid and/or checkout-template.liquid file which makes it more difficult
Thanks again but it is not calculating the £80 DVLA and not showing up in the checkout summary. As mentioned before I don’t have access to the cart.liquid and only main-cart- Items .liquid.