One time costs for products
When purchasing a product, is there a best practice how to deal with one time costs?
We order 10 x product A for 100$ each.
To setup the machine to produce this product, we have to pay 500$ programing fees.
So for the first batch, we have to pay 10 x 100$ unit costs + 500$ programing fee.
For the next batch, we just have to pay 100$ unit costs, as we have already paid the one-time fee.
Is there a best practice how to document this in Odoo?
Of course I can add the programing costs to the unit costs for the first batch.
For later orders, it will be hard to determine is this unit costs include the programing costs or not.
Do you have any recommendation how to deal with this?