Checkout without payment problem

I am using a solution described here to enable a checkout without payment, (set up 0 as price and display “display price” instead) but I can’t find a work around for the Check out page - I need to display Total, Subtotal etc. but it seems it’s not possible. Maybe someone figured this out? I am building for B2B client and companies pay by invoice.

Here is my site Read-Only: LINK (Accept Ecommerce orders without payment | Webflow University)