docs: Improve sentece regarding to free compute

Author: patrikbraborec

sources/platform/actors/publishing/monetize/pay_per_event.mdx

@@ -144,9 +144,11 @@ We recommend using the synthetic Actor start event in PPE Actors. It benefits bo
 
 Starting an Actor takes time, and creates additional cost for the Actor creator, because the profit equals revenue minus platform costs.
 
-One of the options to charge for the time spent on starting the Actor is to charge an “Actor start” event. Let’s say $1 for 1000 Actor starts. Unfortunately, this makes your Actor comparably expensive with other tools on the market (outside of [Apify Store](/platform/console/store)) that do not incur this startup cost.
+One of the options to charge for the time spent on starting the Actor is to charge an “Actor start” event. Unfortunately, this makes your Actor comparably expensive with other tools on the market (outside of [Apify Store](/platform/console/store)) that do not incur this startup cost.
 
-We want to make it easier for Actor creators to stay competitive, but also help them to be profitable. Therefore, we have the Apify Actor synthetic start event `apify-actor-start`.
+We want to make it easier for Actor creators to stay competitive, but also help them to be profitable. Therefore, we have the Apify Actor synthetic start event `apify-actor-start`. This event is enabled by default for all new PPE Actors, and when you use it Apify will cover the compute unit cost of the first 5 seconds of every Actor run.
+
+The default price of the event is set intentionally low. This pricing means that the free 5 seconds of compute we provide costs us more than the revenue generated from the event. We've made this investment to **support our creator community** by reducing your startup costs while keeping your Actors competitively priced for users.
 
 #### How the synthetic start event works