Yes, they are flat rate charges.
How do I add the price to the element labels?
I have 6 rules per category (Standard, First Class and Next Day):
Under £75 (under 1kg)
Under £75 (over 1kg)
Under £75 (over 2kg)
Over £75 (under 1kg)
Over £75 (over 1kg)
Over £75 (over 2kg)
The Standard Delivery is the default and the others are increments on this price. Not sure how I convert this from cart data to a value on the page.