"Other" costs (royalities, fees etc)

We see a need for a more flexible way to input additional order-related costs in the Cost Setup. Specifically, it would be highly valuable to have a customizable field (e.g., 'Other Variable Costs') to account for expenses that impact our margins but aren't strictly COGS or shipping.

Examples of use cases:

• Royalty payments: Fees paid per unit sold.

• Sales Commissions: External commissions per order.

• Marketplace Fees: Third-party platform fees

By allowing these costs to be defined in Dema, we can achieve a much more accurate 'True Profit' calculation per sales channel. Is this something on your roadmap, or perhaps something that could be solved via a generic cost-mapping feature?"