Let's look at an example of a $100 order going through a Carro retailer.
Let's say the revenue split is:
When a customer purchases an item from the retailer's store, the retailer captures the payment in full ($100).
Then, the retailer's credit card is charged the wholesale price of the product to account for the supplier's share ($70).
This $70 is routed to the supplier's bank account via Stripe.
This leaves the retailer with $30 of the sale.
At the end of the retailer's Shopify billing cycle, Carro's $5 is charged to the retailer. This can be reported as one charge or broken down into line items for bookkeeping.