How to calculate the cost in the financial model of an online store?

Question

Fintech

I understand how to calculate the cost for services,
the list of services, the cost of an hour of an employee, the number of hours spent on the performance of the service and the managerial rate are taken.
And how to calculate the cost in an online clothing store, where there are a large number of positions and the store operates according to this model
: The order is paid to the factory - Delivery is carried out to the client
(something like srop-shipping)
I.e. the cost of items is known, the managerial margin is known, but the number of commodity items is unknown. they are not redeemed and are not in stock

Answer 1

So you do not redeem in advance, there is essentially no cost, since dropshipping

Answer 2

type of problem is that the plant may not provide the goods?
then consider that he will provide 100% - what other options.

Answer 3

Those. the cost of items is known, the managerial margin is known, but the number of commodity items is unknown . they are not redeemed and are not in stock

Where they are located is not important for calculating the cost.
And it is important - just with the costs, they have already been made or will be made. Or they won't be done at all.
For what purposes do you think.
If you count the financial indicators for today, then, indeed, the goods that have not yet been redeemed can not be counted.
If you consider the cost price, then it does not matter that the goods are not redeemed.
You either do not consider this product at all or consider the price at which you are going to buy this product.