well, good news. they dont have to pay. this part is in youtube blog: 4. Let’s talk about free trials. Creators are the lifeblood of YouTube. So with Google Play Music subscribers instantly joining YouTube Red, we will pay a portion of the revenue we receive from these subscribers to our creators on day 1. Even with 30 day free trials, our creator community will make as much or more as they would have without YouTube Red. 5. Participating in YouTube Red doesn’t cost creators a thing. Whether or not you personally decide to pay for a YouTube Red membership, your videos can still be a part of YouTube Red and you’ll still be able to earn new revenue from your viewers’ membership fees.