Im looking for a simple plugin to make a site from which i can make orders for products. The whole shop should be under an own "tab" in the menu. It should be possible to use nested categories. Each product have an "Add to cart" button, and a textfield to enter the quantity. When the user is finished, they fill out their name and address and such, and an email is sent to the store keeper with all of the information about added items and information about the buyer.
Is there such a plugin?