You only ever pay Impala when you make a booking!
We have two pricing structures for our Booking API. For our Standard option (this is where you access full ARI and where you take payment directly from your customer), you will receive on average 9% of the transaction value. We also offer a Full Service option, where Impala takes payment directly from your customer and takes care of all reconciliation. With this option, you will receive a fixed 4.5% of the transaction value.
For more information, please see our pricing page.