A worked example: one order, eight steps
Take a plain order flow. A new order arrives, the customer is looked up in your CRM, stock is checked, the order is written to the ERP, a shipping label is requested, the tracking number is saved back, a confirmation email goes out, and a row is added to a finance sheet. Call it eight steps. This is a made-up flow for the arithmetic, not a client figure.
On Make that order costs about eight credits. The 10,000 credits in Core cover roughly 1,250 orders a month. A store doing 2,500 orders a month would need around 20,000 credits for this one flow, and that is before the abandoned-cart flow, the returns flow, and the nightly stock sync.
On n8n the same order is one execution. The 2,500 executions in Starter cover 2,500 orders, and adding a ninth or tenth step costs nothing extra.
Notice what the example does not say. At low volume the difference is a few euros a month and nobody should choose a platform over it. The gap only becomes a budget line when flows are long, volumes are high, or both. And n8n's model has its own sharp edge: a flow that loops over a large list inside one run is cheap on the meter, but it can still be heavy on the server that runs it.