I need a extension or function for magento.
Please refer [url removed, login to view]
where each of their product you can select different combination of the stone with a a fix and 1 price.
This admin have be able to add them in the backend such like adding new row and then they can decide their attribute combination and finally the price. It have to able support magento import and export features for the attribute. that mean the attribute group can be export and edited and import back.
Beside that, there is also a custom shipping where one category might be need to charge for a shipping of certain amount if below USD500, let's say. And above that free. Other category will remain free for shipping.