I am a photographer and I would like to create a product that combines several services.

For example, I would like to create a product that combines:

- The shooting fee (there are 3 variants for 8, 10 and 12 hours shooting)

- A book (there are also 3 variants of books)

- A USB stick

The price of the combined article will generally be lower than that of the 3 articles taken separately.

The book and usb stick are not stocked items. I order them from a supplier each time I receive a customer order.

Each item has its own cost which can vary depending on the variants and I would like the cost of the combined item to be the sum of the costs of the items that compose it.