I have a small photo ordering website integrated with Oscom shopping cart(linux).
All process of creating an account, loading photos, calculating price and pick up destination is working fine.
There are 5 location + currier shipment -for pickup destinations.
[url removed, login to view] after loading and choosing a pickup destination ,they would see 6 options - choosing one
You part: to add an order number with the initials of the shop.
[url removed, login to view] would be shifted Automatically to 6 folders on server
in which admin would login and see all orders (as separate files)and data about clients details and payment method - they would login only through HTTP Not FTP,as its a shared server.
[url removed, login to view] would be able to download all files as a batch and automate file downloading,and eb able to update clients through automation mail about order status - pending , proccessing , delivered and be able to delete the files after completion.
You may use any open source download manger, as long it would be easy for Admin to make sense of the orders.
Sorry,I don't do escrow, till work is completed FULLY.