Limit workflow runs tiggered via webhook

I have a workflow that is triggered by a local payment processor. Every time something happens on their platform, they send me an event. This is the standard behavior and is not configurable.

Since I don't have a use case for about 80% of the events sent, my workflow starts with a conditional block that checks for the event type and halts the run for all except the relevant event type.

Naturally, Retool counts every single run, which is turning to be expensive. Is there any workaround within the platform?