Piwik is already tracking details of orders:

• Order Revenue grand total (includes tax, shipping, and subtracted discount)
• Order sub total (excludes shipping)
• Tax amount
• Shipping amount
• Discount offered

This is great so far but some important things are missing for making good decisions on base of Piwiks data for the right direction/future of business concepts and details (e.g. strategy of products, prices and discount, shipping, payment etc.)

Since there was just a ticket opened collecting all important data to be tracked on abandoned carts #9176,
the same items are of course important for completed orders.

Here is the list:

1) Details for each item in order:

• Name
• SKU
• Original Price
• Price (on cart, after discount)
• Quantity

2) For order in general:

• Total Revenue
• Tax amount
• Payment method
• Payment cost
• Shipping type
• Shipping Cost
• Discount
• Discount reason e.g. coupon

feel free to add some more!