Unreal Engine 4, completely free?

if i use unreal engine 4 for to make video games and make it free, i don’t have to pay back right? 2nd questions, if i decide to sell my games i have to pay $150 for each $3,000 per product, per quarter, if my product reach that limit, right?

i’m new to this stuff.

You have to pay epic 5% of your gross revenue after your made $3000/quarter. If you make less than $3000 per quarter, then you don’t have to pay anything.

Here is an excerpt from https://www.unrealengine.com/release:

Royalty Payment and Tracking

Once you’ve begun collecting money for
your product, you’ll need to track
gross revenue and pay a 5% royalty on
that amount after the first $3000 per
game per calendar quarter.

thank you.