Shipping calculator that will be embedded into eBay listings.
I will give you the postage charges to all of Australia's postcodes. When a postcode is entered into the calculator, the shipping cost will appear below it, not open in a separate page. I can give examples in other listings, which would be suitable to imitate.
I will need to be able to change the assigned weight in kg to each listing that I embed the calculator into. I need everything to be editable, as shipping charges to different destinations, will change over time.