We currently sell some products on the Amazon Seller Central platform in UK: [url removed, login to view]
We need a software or some system created that will enable us to quickly and easily:
1. download any new orders that need shipping
2. print invoices for all orders with one click (including customer's name, address and order details)
3. upload to Amazon to tell the system that those orders have been shipped.
Please note, this software is only for our own use, and will not be sold as a product, so the functionality is much more important than any looks or UI.
To make this product work, I believe you will have to utilize the seller central API:
[url removed, login to view]